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Granovskiy DL, Khudainazarova NS, Evtushenko EA, Ryabchevskaya EM, Kondakova OA, Arkhipenko MV, Kovrizhko MV, Kolpakova EP, Tverdokhlebova TI, Nikitin NA, Karpova OV. Novel Universal Recombinant Rotavirus A Vaccine Candidate: Evaluation of Immunological Properties. Viruses 2024; 16:438. [PMID: 38543803 PMCID: PMC10976063 DOI: 10.3390/v16030438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/04/2024] [Accepted: 03/10/2024] [Indexed: 05/23/2024] Open
Abstract
Rotavirus infection is a leading cause of severe dehydrating gastroenteritis in children under 5 years of age. Although rotavirus-associated mortality has decreased considerably because of the introduction of the worldwide rotavirus vaccination, the global burden of rotavirus-associated gastroenteritis remains high. Current vaccines have a number of disadvantages; therefore, there is a need for innovative approaches in rotavirus vaccine development. In the current study, a universal recombinant rotavirus antigen (URRA) for a novel recombinant vaccine candidate against rotavirus A was obtained and characterised. This antigen included sequences of the VP8* subunit of rotavirus spike protein VP4. For the URRA, for the first time, two approaches were implemented simultaneously-the application of a highly conserved neutralising epitope and the use of the consensus of the extended protein's fragment. The recognition of URRA by antisera to patient-derived field rotavirus isolates was proven. Plant virus-based spherical particles (SPs), a novel, effective and safe adjuvant, considerably enhanced the immunogenicity of the URRA in a mouse model. Given these facts, a URRA + SPs vaccine candidate is regarded as a prospective basis for a universal vaccine against rotavirus.
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Affiliation(s)
- Dmitriy L. Granovskiy
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia; (N.S.K.); (E.A.E.); (E.M.R.); (O.A.K.); (M.V.A.); (N.A.N.); (O.V.K.)
| | - Nelli S. Khudainazarova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia; (N.S.K.); (E.A.E.); (E.M.R.); (O.A.K.); (M.V.A.); (N.A.N.); (O.V.K.)
| | - Ekaterina A. Evtushenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia; (N.S.K.); (E.A.E.); (E.M.R.); (O.A.K.); (M.V.A.); (N.A.N.); (O.V.K.)
| | - Ekaterina M. Ryabchevskaya
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia; (N.S.K.); (E.A.E.); (E.M.R.); (O.A.K.); (M.V.A.); (N.A.N.); (O.V.K.)
| | - Olga A. Kondakova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia; (N.S.K.); (E.A.E.); (E.M.R.); (O.A.K.); (M.V.A.); (N.A.N.); (O.V.K.)
| | - Marina V. Arkhipenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia; (N.S.K.); (E.A.E.); (E.M.R.); (O.A.K.); (M.V.A.); (N.A.N.); (O.V.K.)
| | - Marina V. Kovrizhko
- Rostov Research Institute of Microbiology and Parasitology, 344010 Rostov-On-Don, Russia; (M.V.K.); (E.P.K.); (T.I.T.)
| | - Elena P. Kolpakova
- Rostov Research Institute of Microbiology and Parasitology, 344010 Rostov-On-Don, Russia; (M.V.K.); (E.P.K.); (T.I.T.)
| | - Tatyana I. Tverdokhlebova
- Rostov Research Institute of Microbiology and Parasitology, 344010 Rostov-On-Don, Russia; (M.V.K.); (E.P.K.); (T.I.T.)
| | - Nikolai A. Nikitin
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia; (N.S.K.); (E.A.E.); (E.M.R.); (O.A.K.); (M.V.A.); (N.A.N.); (O.V.K.)
| | - Olga V. Karpova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia; (N.S.K.); (E.A.E.); (E.M.R.); (O.A.K.); (M.V.A.); (N.A.N.); (O.V.K.)
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Sokol OO, Nikitin NA, Evtushenko EA, Karpova OV, Matveeva IN, Gryn SA, Popova VM, Ivanov IV, Fedorov YN, Litenkova IY. Protective Activity of Inactivated Rabies Vaccine Using Flagellin-Based Adjuvant. Biochemistry (Mosc) 2024; 89:574-582. [PMID: 38648774 DOI: 10.1134/s0006297924030155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/19/2024] [Accepted: 03/01/2024] [Indexed: 04/25/2024]
Abstract
Rabies is a zoonotic disease with high lethality. Most human deaths are associated with the bites received from dogs and cats. Vaccination is the most effective method of preventing rabies disease in both animals and humans. In this study, the ability of an adjuvant based on recombinant Salmonella typhimurium flagellin to increase protective activity of the inactivated rabies vaccine in mice was evaluated. A series of inactivated dry culture vaccine for dogs and cats "Rabikan" (strain Shchelkovo-51) with addition of an adjuvant at various dilutions were used. The control preparation was a similar series of inactivated dry culture vaccine without an adjuvant. Protective activity of the vaccine preparations was evaluated by the NIH potency test, which is the most widely used and internationally recommended method for testing effectiveness of the inactivated rabies vaccines. The value of specific activity of the tested rabies vaccine when co-administered with the adjuvant was significantly higher (48.69 IU/ml) than that of the vaccine without the adjuvant (3.75 IU/ml). Thus, recombinant flagellin could be considered as an effective adjuvant in the composition of future vaccine preparations against rabies virus.
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Affiliation(s)
- Olga O Sokol
- All-Russian Scientific Research and Technological Institute of Biological Industry, Biocombinat, Moscow Region, 141142, Russia
| | - Nikolai A Nikitin
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia.
| | | | - Olga V Karpova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Irina N Matveeva
- All-Russian Scientific Research and Technological Institute of Biological Industry, Biocombinat, Moscow Region, 141142, Russia
- Shchelkovo Biocombinat Federal State Enterprise, Biocombinat, Moscow Region, 141142, Russia
| | - Svetlana A Gryn
- All-Russian Scientific Research and Technological Institute of Biological Industry, Biocombinat, Moscow Region, 141142, Russia
| | - Vera M Popova
- All-Russian Scientific Research and Technological Institute of Biological Industry, Biocombinat, Moscow Region, 141142, Russia
| | - Igor V Ivanov
- All-Russian Scientific Research and Technological Institute of Biological Industry, Biocombinat, Moscow Region, 141142, Russia
| | - Yuri N Fedorov
- All-Russian Scientific Research and Technological Institute of Biological Industry, Biocombinat, Moscow Region, 141142, Russia
| | - Irina Y Litenkova
- Shchelkovo Biocombinat Federal State Enterprise, Biocombinat, Moscow Region, 141142, Russia
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Kovalenko AO, Ryabchevskaya EM, Evtushenko EA, Kondakova OA, Ivanov PA, Arkhipenko MV, Nikitin NA, Karpova OV. Dataset on safety and protective efficacy studies of COVID-19 vaccine candidates based on structurally modified plant virus in female hamsters. Data Brief 2023; 48:109158. [PMID: 37095758 PMCID: PMC10113597 DOI: 10.1016/j.dib.2023.109158] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/11/2023] [Accepted: 04/13/2023] [Indexed: 04/26/2023] Open
Abstract
This data article is related to the previous research, which addressed the development of a COVID-19 recombinant vaccine candidate. Here, we present the additional data in support of the safety and protective efficacy evaluation of two COVID-19 vaccine candidates based on the coronaviruses' S protein fragments and a structurally modified plant virus - spherical particles. The effectiveness of the experimental vaccines was studied against the SARS-CoV-2 virus in an in vivo infection model in female Syrian hamsters. The body weight of vaccinated laboratory animals was monitored. The histological assessment data of the infected with the SARS-CoV-2 virus hamsters' lungs are provided.
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Affiliation(s)
- A O Kovalenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow 119234, Russian Federation
| | - E M Ryabchevskaya
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow 119234, Russian Federation
| | - E A Evtushenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow 119234, Russian Federation
| | - O A Kondakova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow 119234, Russian Federation
| | - P A Ivanov
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow 119234, Russian Federation
| | - M V Arkhipenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow 119234, Russian Federation
| | - N A Nikitin
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow 119234, Russian Federation
| | - O V Karpova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow 119234, Russian Federation
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Ksenofontov AL, Petoukhov MV, Matveev VV, Fedorova NV, Semenyuk PI, Arutyunyan AM, Manukhova TI, Evtushenko EA, Nikitin NA, Karpova OV, Shtykova EV. Effect of the Coat Protein N-Terminal Domain Structure on the Structure and Physicochemical Properties of Virions of Potato Virus X and Alternanthera Mosaic Virus. Biochemistry Moscow 2023; 88:119-130. [PMID: 37068873 DOI: 10.1134/s0006297923010108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
The amino acid sequences of the coat proteins (CPs) of the potexviruses potato virus X (PVX) and alternanthera mosaic virus (AltMV) share ~40% identity. The N-terminal domains of these proteins differ in the amino acid sequence and the presence of the N-terminal fragment of 28 residues (ΔN peptide) in the PVX CP. Here, we determined the effect of the N-terminal domain on the structure and physicochemical properties of PVX and AltMV virions. The circular dichroism spectra of these viruses differed significantly, and the melting point of PVX virions was 10-12°C higher than that of AltMV virions. Alignment of the existing high-resolution 3D structures of the potexviral CPs showed that the RMSD value between the Cα-atoms was the largest for the N-terminal domains of the two compared models. Based on the computer modeling, the ΔN peptide of the PVX CP is fully disordered. According to the synchrotron small-angle X-ray scattering (SAXS) data, the structure of CPs from the PVX and AltMV virions differ; in particular, the PVX CP has a larger portion of crystalline regions and, therefore, is more ordered. Based on the SAXS data, the diameters of the PVX and AltMV virions and helix parameters in solution were calculated. The influence of the conformation of the PVX CP N-terminal domain and its position relative to the virion surface on the virion structure was investigated. Presumably, an increased thermal stability of PVX virions vs. AltMV is provided by the extended N-terminal domain (ΔN peptide, 28 amino acid residues), which forms additional contacts between the adjacent CP subunits in the PVX virion.
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Affiliation(s)
- Alexander L Ksenofontov
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia.
| | - Maxim V Petoukhov
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre "Crystallography and Photonics", Russian Academy of Sciences, Moscow, 119333, Russia
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, 119071, Russia
| | - Vladimir V Matveev
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre "Crystallography and Photonics", Russian Academy of Sciences, Moscow, 119333, Russia
| | - Natalia V Fedorova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Pavel I Semenyuk
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Alexander M Arutyunyan
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Tatiana I Manukhova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | | | - Nikolai A Nikitin
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Olga V Karpova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Eleonora V Shtykova
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre "Crystallography and Photonics", Russian Academy of Sciences, Moscow, 119333, Russia
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Sazonova SI, Varlamova JV, Nikitin NA, Minin SM, Kisteneva IV, Batalov RE, Mishkina AI, Ilushenkova YN, Zavadovsky KV, Popov SV, Romanov AB. Cardiac 123I-mIBG scintigraphy for prediction of catheter ablation outcome in patients with atrial fibrillation. J Nucl Cardiol 2022; 29:2220-2231. [PMID: 34046802 DOI: 10.1007/s12350-021-02658-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 02/04/2021] [Accepted: 04/20/2021] [Indexed: 01/27/2023]
Abstract
BACKGROUND Previous studies show inconsistent results on the role of innervation imaging (with 123I-mIBG) in predicting late atrial fibrillation (AF) recurrence after catheter ablation (CA). These studies included patients with paroxysmal AF and studied prognostic value of post-CA I-123-mIBG parameters. Current study investigated the ability of pre CA 123-I-mIBG imaging to predict late AF recurrence in patients with persistent AF. METHODS 123I-mIBG cardiac imaging was performed before CA in 82 patients with persistent AF. Patient was followed for 12 months. RESULTS Multivariable analysis demonstrated that late heart-to-mediastinum ratio (H/Mlate) and washout rate (WR) were independent predictors of AF recurrence. ROC-curve analysis data showed that H/Mlate <1.6 (sensitivity 73.53%, specificity 81.3%, AUC 0.792, P < .001) and WR > 25.11 (sensitivity 70.6%, specificity 70.8.3%, AUC 0.712, P < .001) indicate high probability of AF relapses during 12 months after CA. CONCLUSION Pre-CA parameters of global cardiac sympathetic activity estimated by 123I-mIBG scintigraphy are associated with late AF relapses in persistent AF patients with normal LVEF and absence of significant CAD.
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Affiliation(s)
- S I Sazonova
- Cardiology Research Institute, Tomsk National Research Medical Centre, Russian Academy of Sciences, Cardiology Research Institute, Tomsk NRMC, Tomsk, Russian Federation.
| | - J V Varlamova
- Cardiology Research Institute, Tomsk National Research Medical Centre, Russian Academy of Sciences, Cardiology Research Institute, Tomsk NRMC, Tomsk, Russian Federation
| | - N A Nikitin
- E. Meshalkin National Medical Research Center Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - S M Minin
- E. Meshalkin National Medical Research Center Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
| | - I V Kisteneva
- Cardiology Research Institute, Tomsk National Research Medical Centre, Russian Academy of Sciences, Cardiology Research Institute, Tomsk NRMC, Tomsk, Russian Federation
| | - R E Batalov
- Cardiology Research Institute, Tomsk National Research Medical Centre, Russian Academy of Sciences, Cardiology Research Institute, Tomsk NRMC, Tomsk, Russian Federation
| | - A I Mishkina
- Cardiology Research Institute, Tomsk National Research Medical Centre, Russian Academy of Sciences, Cardiology Research Institute, Tomsk NRMC, Tomsk, Russian Federation
| | - Y N Ilushenkova
- Cardiology Research Institute, Tomsk National Research Medical Centre, Russian Academy of Sciences, Cardiology Research Institute, Tomsk NRMC, Tomsk, Russian Federation
| | - K V Zavadovsky
- Cardiology Research Institute, Tomsk National Research Medical Centre, Russian Academy of Sciences, Cardiology Research Institute, Tomsk NRMC, Tomsk, Russian Federation
| | - S V Popov
- Cardiology Research Institute, Tomsk National Research Medical Centre, Russian Academy of Sciences, Cardiology Research Institute, Tomsk NRMC, Tomsk, Russian Federation
| | - A B Romanov
- E. Meshalkin National Medical Research Center Ministry of Health of the Russian Federation, Novosibirsk, Russian Federation
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Granovskiy DL, Ryabchevskaya EM, Evtushenko EA, Kondakova OA, Arkhipenko MV, Kravchenko TB, Bakhteeva IV, Timofeev VS, Nikitin NA, Karpova OV. New formulation of a recombinant anthrax vaccine stabilised with structurally modified plant viruses. Front Microbiol 2022; 13:1003969. [PMID: 36160184 PMCID: PMC9501872 DOI: 10.3389/fmicb.2022.1003969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
Anthrax is a disease caused by Bacillus anthracis. The most promising approach to the development of anthrax vaccine is use of the anthrax protective antigen (PA). At the same time, recombinant PA is a very unstable protein. Previously, the authors have designed a stable modified recombinant anthrax protective antigen with inactivated proteolytic sites and substituted deamidation sites (rPA83m). As a second approach to recombinant PA stabilisation, plant virus spherical particles (SPs) were used as a stabiliser. The combination of these two approaches was shown to be the most effective. Here, the authors report the results of a detailed study of the stability, immunogenicity and protectiveness of rPA83m + SPs compositions. These compositions were shown to be stable, provided high anti-rPA83m antibody titres in guinea pigs and were able to protect them from a fully virulent 81/1 Bacillus anthracis strain. Given these facts, the formulation of rPA83m + SPs compositions is considered to be a prospective anthrax vaccine candidate.
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Affiliation(s)
- Dmitriy L. Granovskiy
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
- *Correspondence: Dmitriy L. Granovskiy,
| | | | - Ekaterina A. Evtushenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Olga A. Kondakova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Marina V. Arkhipenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Tatiana B. Kravchenko
- Federal Budget Institution of Science State Research Center for Applied Microbiology and Biotechnology (FBIS SRCAMB), Obolensk, Russia
| | - Irina V. Bakhteeva
- Federal Budget Institution of Science State Research Center for Applied Microbiology and Biotechnology (FBIS SRCAMB), Obolensk, Russia
| | - Vitalii S. Timofeev
- Federal Budget Institution of Science State Research Center for Applied Microbiology and Biotechnology (FBIS SRCAMB), Obolensk, Russia
| | - Nikolai A. Nikitin
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Olga V. Karpova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
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7
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Kondakova OA, Evtushenko EA, Baranov OA, Nikitin NA, Karpova OV. Structurally Modified Plant Viruses and Bacteriophages with Helical Structure. Properties and Applications. Biochemistry Moscow 2022; 87:548-558. [PMID: 35790410 PMCID: PMC9201271 DOI: 10.1134/s0006297922060062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Structurally modified virus particles can be obtained from the rod-shaped or filamentous virions of plant viruses and bacteriophages by thermal or chemical treatment. They have recently attracted attention of the researchers as promising biogenic platforms for the development of new biotechnologies. This review presents data on preparation, structure, and properties of the structurally modified virus particles. In addition, their biosafety for animals is considered, as well as the areas of application of such particles in biomedicine. A separate section is devoted to one of the most relevant and promising areas for the use of structurally modified plant viruses – design of vaccine candidates based on them.
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Affiliation(s)
- Olga A Kondakova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | | | - Oleg A Baranov
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Nikolai A Nikitin
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Olga V Karpova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
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8
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Ryabchevskaya EM, Granovskiy DL, Evtushenko EA, Ivanov PA, Kondakova OA, Nikitin NA, Karpova OV. Designing Stable Bacillus anthracis Antigens with a View to Recombinant Anthrax Vaccine Development. Pharmaceutics 2022; 14:pharmaceutics14040806. [PMID: 35456639 PMCID: PMC9025368 DOI: 10.3390/pharmaceutics14040806] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 02/25/2022] [Revised: 04/01/2022] [Accepted: 04/04/2022] [Indexed: 02/04/2023] Open
Abstract
Anthrax is a disease caused by Bacillus anthracis that affects mammals, including humans. Recombinant B. anthracis protective antigen (rPA) is the most common basis for modern anthrax vaccine candidates. However, this protein is characterised by low stability due to proteolysis and deamidation. Here, for the first time, two modification variants leading to full-size rPA stabilisation have been implemented simultaneously, through deamidation-prone asparagine residues substitution and by inactivation of proteolysis sites. Obtained modified rPA (rPA83m) has been demonstrated to be stable in various temperature conditions. Additionally, rPA1+2 containing PA domains I and II and rPA3+4 containing domains III and IV, including the same modifications, have been shown to be stable as well. These antigens can serve as the basis for a vaccine, since the protective properties of PA can be attributed to individual PA domains. The stability of each of three modified anthrax antigens has been considerably improved in compositions with tobacco mosaic virus-based spherical particles (SPs). rPA1+2/rPA3+4/rPA83m in compositions with SPs have maintained their antigenic specificity even after 40 days of incubation at +37 °C. Considering previously proven adjuvant properties and safety of SPs, their compositions with rPA83m/rPA1+2/rPA3+4 in any combinations might be suitable as a basis for new-generation anthrax vaccines.
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Kovalenko AO, Ryabchevskaya EM, Evtushenko EA, Manukhova TI, Kondakova OA, Ivanov PA, Arkhipenko MV, Gushchin VA, Nikitin NA, Karpova OV. Vaccine Candidate Against COVID-19 Based on Structurally Modified Plant Virus as an Adjuvant. Front Microbiol 2022; 13:845316. [PMID: 35295298 PMCID: PMC8919459 DOI: 10.3389/fmicb.2022.845316] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 02/04/2022] [Indexed: 12/24/2022] Open
Abstract
A recombinant vaccine candidate has been developed based on the major coronaviruses’ antigen (S protein) fragments and a novel adjuvant—spherical particles (SPs) formed during tobacco mosaic virus thermal remodeling. The receptor-binding domain and the highly conserved antigenic fragments of the S2 protein subunit were chosen for the design of recombinant coronavirus antigens. The set of three antigens (Co1, CoF, and PE) was developed and used to create a vaccine candidate composed of antigens and SPs (SPs + 3AG). Recognition of SPs + 3AG compositions by commercially available antibodies against spike proteins of SARS-CoV and SARS-CoV-2 was confirmed. The immunogenicity testing of these compositions in a mouse model showed that SPs improved immune response to the CoF and PE antigens. Total IgG titers against both proteins were 9–16 times higher than those to SPs. Neutralizing activity against SARS-CoV-2 in serum samples collected from hamsters immunized with the SPs + 3AG was demonstrated.
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Affiliation(s)
- Angelina O Kovalenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | | | - Ekaterina A Evtushenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Tatiana I Manukhova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Olga A Kondakova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Peter A Ivanov
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Marina V Arkhipenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Vladimir A Gushchin
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia.,N.F. Gamaleya National Research Center for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Nikolai A Nikitin
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Olga V Karpova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
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10
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Bikbov MM, Gilmanshin TR, Zainullin RM, Rakhimova EM, Rusakova IA, Fakhretdinova AA, Tuliakova AM, Kazakbaeva GM, Panda-Jonas S, Safiullina KR, Bolshakova NI, Gizzatov AV, Ponomarev IP, Nikitin NA, Baimukhametov NE, Jonas JB. Ankle-brachial index and ocular diseases in a Russian population. Eye (Lond) 2021; 36:2294-2303. [PMID: 34845354 PMCID: PMC9674843 DOI: 10.1038/s41433-021-01846-x] [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: 03/05/2021] [Revised: 11/04/2021] [Accepted: 11/05/2021] [Indexed: 12/02/2022] Open
Abstract
Background To assess potential associations between the ankle-brachial blood pressure index (ABI) and ocular disorders. Methods In the population-based cross-sectional Russian Ural Eye and Medical Study including 5,899 (80.5%) out of 7328 eligible participants aged 40+ years, the participants underwent a series of ocular and medical examinations including measurement of ABI. Results Blood pressure measurements of both arms and ankles were available for 3187 (54.0%) individuals. The mean ABI was 1.26 ± 0.19 (median:1.20; range: 0.61, 2.20). In multivariate analysis, a higher ABI was associated with younger age (P < 0.001; non-standardized regression coefficient B: −0.001; 95% confidence interval (CI): −0.002, −0.001), female sex (P < 0.001; B: 0.03; 95% CI: 0.02, 0.04), lower body mass index (P < 0.001; B: −0.004; 95% CI: −0.006, −0.003), lower waist-to-hip ratio (P = 0.01; B: −0.10; 95% CI: −0.17, −0.02), lower glucose serum concentration (P = 0.008; B: −0.005; 95% CI: −0.009, −0.001), lower prevalence of arterial hypertension (P < 0.001; B: −0.14; 95% CI: −0.16, −0.12), higher mean systolic blood pressure (P < 0.001; B: 0.003; 95% CI: 0.002, 0.003), and higher prevalence of any alcohol consumption (P < 0.001; B: 0.03; 95% CI: 0.02, 0.04). In that multivariate model, prevalence of glaucoma (P = 0.67) as a whole, open-angle glaucoma (P = 0.86) and angle-closure glaucoma (P = 0.54), stage of glaucomatous optic neuropathy (P = 0.57), prevalence of age-related macular degeneration (P = 0.88), prevalence and stage of diabetic retinopathy (P = 0.30, and P = 0.29, respectively), nuclear cataract (P = 0.32, and P = 0.41, resp.), cortical cataract (P = 0.33, and P = 0.92, resp.), subcapsular cataract (P = 0.74 and P = 0.60, resp.), and pseudoexfoliation (P = 0.44 and P = 0.47, resp.), intraocular pressure (P = 0.52), axial length (P = 0.20), and peripapillary retinal nerve fibre layer thickness (P = 0.55) were not significantly associated with the ABI. Conclusions In this ethnically mixed population from Russia, none of the major ocular diseases was associated with ABI suggesting that subclinical atherosclerosis is not markedly associated with the aetiology of these ocular disorders.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Jost B Jonas
- Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University of Heidelberg, Mannheim, Germany. .,Institute of Molecular and Clinical Ophthalmology Basel, Basel, Switzerland.
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11
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Tuchynskaya KK, Fomina AD, Nikitin NA, Illarionova VV, Volok VP, Kozlovskaya LI, Rogova AA, Vasilenko DA, Averina EB, Osolodkin DI, Karganova GG. Effect of immature tick-borne encephalitis virus particles on antiviral activity of 5-aminoisoxazole-3-carboxylic acid adamantylmethyl esters. J Gen Virol 2021; 102. [PMID: 34546870 DOI: 10.1099/jgv.0.001658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Tick-borne encephalitis virus (TBEV), a member of the genus Flavivirus, is common in Europe and Asia and causes a severe disease of the central nervous system. A promising approach in the development of therapy for TBEV infection is the search for small molecule antivirals targeting the flavivirus envelope protein E, particularly its β-n-octyl-d-glucoside binding pocket (β-OG pocket). However, experimental studies of candidate antivirals may be complicated by varying amounts and different forms of the protein E in the virus samples. Viral particles with different conformations and arrangements of the protein E are produced during the replication cycle of flaviviruses, including mature, partially mature, and immature forms, as well as subviral particles lacking genomic RNA. The immature forms are known to be abundant in the viral population. We obtained immature virion preparations of TBEV, characterized them by RT-qPCR, and assessed in vivo and in vitro infectivity of the residual mature virions in the immature virus samples. Analysis of the β-OG pocket structure on the immature virions confirmed the possibility of binding of adamantylmethyl esters of 5-aminoisoxazole-3-carboxylic acid in the pocket. We demonstrated that the antiviral activity of these compounds in plaque reduction assay is significantly reduced in the presence of immature TBEV particles.
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Affiliation(s)
- Ksenia K Tuchynskaya
- FSASI "Chumakov FSC R&D IBP RAS" (Institute of Poliomyelitis), Moscow 108819, Russia
| | - Anastasiia D Fomina
- FSASI "Chumakov FSC R&D IBP RAS" (Institute of Poliomyelitis), Moscow 108819, Russia.,Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Nikolai A Nikitin
- Department of Biology, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Viktoria V Illarionova
- FSASI "Chumakov FSC R&D IBP RAS" (Institute of Poliomyelitis), Moscow 108819, Russia.,Department of Biology, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Viktor P Volok
- FSASI "Chumakov FSC R&D IBP RAS" (Institute of Poliomyelitis), Moscow 108819, Russia.,Department of Biology, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Liubov I Kozlovskaya
- FSASI "Chumakov FSC R&D IBP RAS" (Institute of Poliomyelitis), Moscow 108819, Russia.,Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow 119435, Russia
| | - Anastasia A Rogova
- FSASI "Chumakov FSC R&D IBP RAS" (Institute of Poliomyelitis), Moscow 108819, Russia
| | - Dmitry A Vasilenko
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Elena B Averina
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Dmitry I Osolodkin
- FSASI "Chumakov FSC R&D IBP RAS" (Institute of Poliomyelitis), Moscow 108819, Russia.,Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia.,Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow 119435, Russia
| | - Galina G Karganova
- FSASI "Chumakov FSC R&D IBP RAS" (Institute of Poliomyelitis), Moscow 108819, Russia.,Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow 119435, Russia
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12
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Manukhova TI, Evtushenko EA, Ksenofontov AL, Arutyunyan AM, Kovalenko AO, Nikitin NA, Karpova OV. Thermal remodelling of Alternanthera mosaic virus virions and virus-like particles into protein spherical particles. PLoS One 2021; 16:e0255378. [PMID: 34320024 PMCID: PMC8318239 DOI: 10.1371/journal.pone.0255378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/15/2021] [Indexed: 11/24/2022] Open
Abstract
The present work addresses the thermal remodelling of flexible plant viruses with a helical structure and virus-like particles (VLPs). Here, for the first time, the possibility of filamentous Alternanthera mosaic virus (AltMV) virions' thermal transition into structurally modified spherical particles (SP) has been demonstrated. The work has established differences in formation conditions of SP from virions (SPV) and VLPs (SPVLP) that are in accordance with structural data (on AltMV virions and VLPs). SP originate from AltMV virions through an intermediate stage. However, the same intermediate stage was not detected during AltMV VLPs' structural remodelling. According to the biochemical analysis, AltMV SPV consist of protein and do not include RNA. The structural characterisation of AltMV SPV/VLP by circular dichroism, intrinsic fluorescence spectroscopy and thioflavin T fluorescence assay has been performed. AltMV SPV/VLP adsorption properties and the availability of chemically reactive surface amino acids have been analysed. The revealed characteristics of AltMV SPV/VLP indicate that they could be applied as protein platforms for target molecules presentation and for the design of functionally active complexes.
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Affiliation(s)
- Tatiana I. Manukhova
- Faculty of Biology, Department of Virology, Lomonosov Moscow State University, Moscow, Russia
| | - Ekaterina A. Evtushenko
- Faculty of Biology, Department of Virology, Lomonosov Moscow State University, Moscow, Russia
| | - Alexander L. Ksenofontov
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Alexander M. Arutyunyan
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Angelina O. Kovalenko
- Faculty of Biology, Department of Virology, Lomonosov Moscow State University, Moscow, Russia
| | - Nikolai A. Nikitin
- Faculty of Biology, Department of Virology, Lomonosov Moscow State University, Moscow, Russia
| | - Olga V. Karpova
- Faculty of Biology, Department of Virology, Lomonosov Moscow State University, Moscow, Russia
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13
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Sazonova S, Varlamova JV, Nikitin NA, Minin SM, Kisteneva IV, Batalov RE, Mishkina AI, Ilushenkova JN, Zavadovsky KV, Popov SV, Romanov AB. Value of cardiac 123I-mIBG scintigraphy in prognosis of catheter ablation outcome in patients with atrial fibrillation. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeab111.081] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Foundation. Main funding source(s): Russian Science Foundation
Background. Previous studies show inconsistent results on the role of innervation imaging (with 123I-mIBG) in predicting late atrial fibrillation (AF) recurrence after catheter ablation (CA). These studies included patients with paroxysmal AF and studied prognostic value of post CA I-123-mIBG parameters. Current study investigated the ability of pre CA 123-I-mIBG imaging to predict late AF recurrence in patients with persistent AF. Thus, the goal of the present study was to estimate the utility of pre-procedural cardiac 123I-mIBG scintigraphy to identify patients at risk for AF recurrence after CA.
Methods. 123I-mIBG cardiac imaging was performed before CA in 82 patients with persistent AF. Patients were followed for 12 months. A blanking period of 3 months was applied. The primary endpoint of the study was AF recurrence between 3 and 12 months after ablation.
Results. Multivariable analysis demonstrated that late heart-to-mediastinum ratio (H/Mlate) and washout rate (WR) were independent predictors of AF recurrence. ROC-curve analysis data showed that H/Mlate <1.6 (sensitivity 73.53 %, specificity 81.3%, AUC 0,792 , p < 0.001) and WR > 25,11 (sensitivity 70.6%, specificity 70.8.3%, AUC 0,712 , p < 0.001) indicate high probability of AF relapses during 12 months after CA. Kaplan-Meier analysis showed that the H/Mlate < 1.6, WR > 25,11 and LAD > 45 mm significantly increase the risk of AF recurrence after CA (p < 0.001, p < 0.001, p < 0.025 respectively).
Conclusion. Pre CA parameters of global cardiac sympathetic activity estimated by 123I-mIBG scintigraphy are associated with late AF relapses in persistent AF patients.
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Affiliation(s)
- S Sazonova
- Cardiology Research Institute, Tomsk NRMC, Nuclear Medicine, Tomsk, Russian Federation
| | - JV Varlamova
- Cardiology Research Institute, Tomsk NRMC, Nuclear Medecine, Tomsk, Russian Federation
| | - NA Nikitin
- Meshalkin National Medical Research Center, Center of Radiology, Novosibirsk, Russian Federation
| | - SM Minin
- Meshalkin National Medical Research Center, Center of Radiology, Novosibirsk, Russian Federation
| | - IV Kisteneva
- Cardiology Research Institute, Tomsk NRMC, Surgical treatment of arrhythmia, Tomsk, Russian Federation
| | - RE Batalov
- Cardiology Research Institute, Tomsk NRMC, Surgical treatment of arrhythmia, Tomsk, Russian Federation
| | - AI Mishkina
- Cardiology Research Institute, Tomsk NRMC, Nuclear Medecine, Tomsk, Russian Federation
| | - JN Ilushenkova
- Cardiology Research Institute, Tomsk NRMC, Nuclear Medecine, Tomsk, Russian Federation
| | - KV Zavadovsky
- Cardiology Research Institute, Tomsk NRMC, Nuclear Medecine, Tomsk, Russian Federation
| | - SV Popov
- Cardiology Research Institute, Tomsk NRMC, Surgical treatment of arrhythmia, Tomsk, Russian Federation
| | - AB Romanov
- Meshalkin National Medical Research Center, Center of Radiology, Novosibirsk, Russian Federation
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14
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Kondakova OA, Ivanov PA, Baranov OA, Ryabchevskaya EM, Arkhipenko MV, Skurat EV, Evtushenko EA, Nikitin NA, Karpova OV. Novel antigen panel for modern broad-spectrum recombinant rotavirus A vaccine. Clin Exp Vaccine Res 2021; 10:123-131. [PMID: 34222124 PMCID: PMC8217573 DOI: 10.7774/cevr.2021.10.2.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/14/2021] [Accepted: 02/15/2021] [Indexed: 11/17/2022] Open
Abstract
Purpose Recombinant rotavirus A vaccines are being developed as an alternative to existing live oral attenuated vaccines. One of the main problems in the production of such vaccines is the genetic diversity of the strains that are in circulation. The goal of this study was to create an antigen panel for modern broad-spectrum recombinant rotavirus A vaccine. Materials and Methods The antigens of rotavirus were cloned and expressed in Escherichia coli. Antigenic specificity was investigated by Western blot analysis, which was performed using commercial polyclonal antisera to several RVA strains. Phylogenetic analysis was based on the amino acid sequences of the VP8* protein fragment of human RVA isolates representing genotypes P[4], P[6], and P[8]. Results A universal panel of antigens was established, including consensus and conserved sequences of structural proteins VP8*, VP5*, and VP7, which are the main targets of neutralizing antibodies. For the first time, a consensus approach was used in the design of extended antigens based on VP8* (genotypes P[4], P[6], and P[8]) and VP5* (genotype P[8]) proteins' fragments. In addition, a gene coding the protein (ep-875) containing several copies of conserved short neutralizing epitopes of VP8*, VP7, and VP5* was created. Western blot analysis demonstrated that three synthetic VP8*-based antigens were not recognized by commercial antiserum against rotavirus strains isolated more than 35 years ago, but the specific activity of the VP5* and ep-875 antigens was confirmed. The problems of serological mismatch of vaccine strains and antigens with currently circulating strains are discussed. Conclusion Five antigens representing sequences of structural proteins belonging to different genotypes can be used in various combinations (from mono- to pentavalent mixtures) for the development of an effective broad-spectrum rotavirus vaccine.
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Affiliation(s)
- Olga A Kondakova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Peter A Ivanov
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Oleg A Baranov
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Ekaterina M Ryabchevskaya
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Marina V Arkhipenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Eugene V Skurat
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Ekaterina A Evtushenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Nikolai A Nikitin
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Olga V Karpova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russian Federation
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15
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Kurashova SS, Ishmukhametov AA, Dzagurova TK, Egorova MS, Balovneva MV, Nikitin NA, Evtushenko EA, Karpova OV, Markina AA, Aparin PG, Tkachenko PE, L Vov VL, Tkachenko EA. Various Adjuvants Effect on Immunogenicity of Puumala Virus Vaccine. Front Cell Infect Microbiol 2020; 10:545371. [PMID: 33194793 PMCID: PMC7649337 DOI: 10.3389/fcimb.2020.545371] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 09/29/2020] [Indexed: 12/14/2022] Open
Abstract
Various adjuvant effects on the immunogenicity of the candidate inactivated Puumala virus vaccine were detected in BALB/c mice. Adjuvants under study were: aluminum hydroxide, spherical particles of Tobacco mosaic virus coat protein, B subunit of heat-labile enterotoxin of Escherichia coli, and low endotoxic lipopolysaccharide of Shigella sonnei. Aluminum hydroxide (1 mg/ml) did not affect neutralizing antibodies’ induction and vaccine stability during storage compared to immunization with the vaccine without adjuvant. B subunit of heat-labile enterotoxin (0.2 µg/ml), low endotoxic lipopolysaccharide (50 µg/ml), and plant virus-based spherical particles (300 µg/ml) significantly enhance the humoral immune response of vaccine (p < 0.0001). Pronounced stimulation of IL-12 and IFN-ɣ was observed when mice were immunized with vaccines both with adjuvants (except of aluminum hydroxide) and without adjuvants. It has been shown that low endotoxic lipopolysaccharide contributes not only to enhance the immune response but also to stabilize vaccine immunogenicity during at least 1 year storage.
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Affiliation(s)
- Svetlana S Kurashova
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences, Moscow, Russia
| | - Aidar A Ishmukhametov
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences, Moscow, Russia.,Institute for Translatonal Medicine and Bionechnology, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Tamara K Dzagurova
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences, Moscow, Russia
| | - Maria S Egorova
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences, Moscow, Russia
| | - Maria V Balovneva
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences, Moscow, Russia
| | - Nikolai A Nikitin
- Department of Virology, Lomonosov Moscow State University, Moscow, Russia
| | | | - Olga V Karpova
- Department of Virology, Lomonosov Moscow State University, Moscow, Russia
| | - Anna A Markina
- National Research Center - Institute of Immunology Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - Peter G Aparin
- National Research Center - Institute of Immunology Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - Petr E Tkachenko
- Department of Internal Medicine Propaedeutics, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Vyatcheslav L L Vov
- National Research Center - Institute of Immunology Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - Evgeniy A Tkachenko
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences, Moscow, Russia
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16
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Ryabchevskaya EM, Evtushenko EA, Granovskiy DL, Ivanov PA, Atabekov JG, Kondakova OA, Nikitin NA, Karpova OV. Two approaches for the stabilization of Bacillus anthracis recombinant protective antigen. Hum Vaccin Immunother 2020; 17:560-565. [PMID: 32614657 DOI: 10.1080/21645515.2020.1772632] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Anthrax is a zoonotic disease caused by the gram-positive spore-forming bacteria Bacillus anthracis. There is a need for safe, highly effective, long-term storage vaccine formulations for mass vaccination. However, the development of new subunit vaccines based on recombinant protective antigen (rPA) faces the problem of vaccine antigen instability. Here, the potential of simultaneous application of two different approaches to stabilize rPA was demonstrated. Firstly, we employed spherical particles (SPs) obtained from the tobacco mosaic virus (TMV). Previously, we had reported that SPs can serve as an adjuvant and platform for antigen presentation. In the current work, SPs were shown to increase the stability of the full-size rPA without loss of its antigenic properties. The second direction was site-specific mutagenesis of asparagine residues to avoid deamidation that causes partial protein degradation. The modified recombinant protein comprising the PA immunogenic domains 3 and 4 (rPA3 + 4) was stable during storage at 4 and 25°C. rPA3 + 4 interacts with antibodies to rPA83 both individually and as a part of a complex with SPs. The results obtained can underpin the development of a recombinant vaccine with a full-size modified rPA (with similar amino acid substitutions that stabilize the protein) and SPs.
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Affiliation(s)
- Ekaterina M Ryabchevskaya
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow, Russian Federation
| | - Ekaterina A Evtushenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow, Russian Federation
| | - Dmitry L Granovskiy
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow, Russian Federation
| | - Peter A Ivanov
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow, Russian Federation
| | - Joseph G Atabekov
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow, Russian Federation
| | - Olga A Kondakova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow, Russian Federation
| | - Nikolai A Nikitin
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow, Russian Federation
| | - Olga V Karpova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow, Russian Federation
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17
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Evtushenko EA, Ryabchevskaya EM, Nikitin NA, Atabekov JG, Karpova OV. Plant virus particles with various shapes as potential adjuvants. Sci Rep 2020; 10:10365. [PMID: 32587281 PMCID: PMC7316779 DOI: 10.1038/s41598-020-67023-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 03/21/2020] [Accepted: 06/01/2020] [Indexed: 01/15/2023] Open
Abstract
Plant viruses are biologically safe for mammals and can be successfully used as a carrier/platform to present foreign epitopes in the course of creating novel putative vaccines. However, there is mounting evidence that plant viruses, their virus-like and structurally modified particles may also have an immunopotentiating effect on antigens not bound with their surface covalently. Here, we present data on the adjuvant properties of plant viruses with various shapes (Tobacco mosaic virus, TMV; Potato virus X, PVX; Cauliflower mosaic virus, CaMV; Bean mild mosaic virus, BMMV) and structurally modified TMV spherical particles (SPs). We have analysed the effectiveness of immune response to individual model antigens (ovalbumin, OVA/hen egg lysozyme, HEL) and to OVA/HEL in compositions with plant viruses/SPs, and have shown that CaMV, TMV and SPs can effectively induce total IgG titers to model antigen. Some intriguing data were obtained when analysing the immune response to the plant viruses/SPs themselves. Strong immunity was induced to CaMV, BMMV and PVX, whereas TMV and SPs stimulated considerably lower self-IgG titers. Our results provide new insights into the immunopotentiating properties of plant viruses and can be useful in devising adjuvants based on plant viruses.
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Affiliation(s)
- Ekaterina A Evtushenko
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119234, Russian Federation.
| | - Ekaterina M Ryabchevskaya
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119234, Russian Federation
| | - Nikolai A Nikitin
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119234, Russian Federation
| | - Joseph G Atabekov
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119234, Russian Federation
| | - Olga V Karpova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119234, Russian Federation
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18
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Ryabchevskaya EM, Evtushenko EA, Arkhipenko MV, Donchenko EK, Nikitin NA, Atabeko JG, Karpova OV. [A Recombinant Rotavirus Antigen Based on the Coat Protein of Alternanthera Mosaic Virus]. Mol Biol (Mosk) 2020; 54:278-284. [PMID: 32392197 DOI: 10.31857/s0026898420020135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 09/02/2019] [Indexed: 11/24/2022]
Abstract
Thanks to their strong immunostimulating properties and safety for humans, plant viruses represent an appropriate basis for the design of novel vaccines. The coat protein of Alternanthera mosaic virus can form virus-like particles that are stable under physiological conditions and have adjuvant properties. This work presents a recombinant human rotavirus A antigen based on the epitope of rotavirus structural protein VP6, using Alternanthera mosaic virus coat protein as a carrier. An expression vector containing the gene of Alternanthera mosaic virus (MU strain) coat protein fused to the epitope of rotavirus protein VP6 was designed. Immunoblot analysis showed that the chimeric protein was effectively recognized by commercial polyclonal antibodies to rotavirus and therefore is a suitable candidate for development of a vaccine prototype. Interaction of the chimeric recombinant protein with the native coat protein of Alternanthera mosaic virus and its RNA resulted in the formation of ribonucleoprotein complexes that were recognized by anti-rotavirus antibodies.
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Affiliation(s)
- E M Ryabchevskaya
- Department of Virology, Faculty of Biology, Moscow State University, Moscow, 119234 Russia.,
| | - E A Evtushenko
- Department of Virology, Faculty of Biology, Moscow State University, Moscow, 119234 Russia
| | - M V Arkhipenko
- Department of Virology, Faculty of Biology, Moscow State University, Moscow, 119234 Russia
| | - E K Donchenko
- Department of Virology, Faculty of Biology, Moscow State University, Moscow, 119234 Russia
| | - N A Nikitin
- Department of Virology, Faculty of Biology, Moscow State University, Moscow, 119234 Russia
| | - J G Atabeko
- Department of Virology, Faculty of Biology, Moscow State University, Moscow, 119234 Russia.,Institute of Bioengineering, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 117312 Russia
| | - O V Karpova
- Department of Virology, Faculty of Biology, Moscow State University, Moscow, 119234 Russia
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Kholodilov IS, Litov AG, Klimentov AS, Belova OA, Polienko AE, Nikitin NA, Shchetinin AM, Ivannikova AY, Bell-Sakyi L, Yakovlev AS, Bugmyrin SV, Bespyatova LA, Gmyl LV, Luchinina SV, Gmyl AP, Gushchin VA, Karganova GG. Isolation and Characterisation of Alongshan Virus in Russia. Viruses 2020; 12:v12040362. [PMID: 32224888 PMCID: PMC7232203 DOI: 10.3390/v12040362] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [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: 02/23/2020] [Revised: 03/19/2020] [Accepted: 03/24/2020] [Indexed: 12/30/2022] Open
Abstract
In recent decades, many new flavi-like viruses have been discovered predominantly in different invertebrates and, as was recently shown, some of them may cause disease in humans. The Jingmenvirus (JMV) group holds a special place among flaviviruses and flavi-like viruses because they have a segmented ssRNA(+) genome. We detected Alongshan virus (ALSV), which is a representative of the JMV group, in ten pools of adult Ixodes persulcatus ticks collected in two geographically-separated Russian regions. Three of the ten strains were isolated in the tick cell line IRE/CTVM19. One of the strains persisted in the IRE/CTVM19 cells without cytopathic effect for three years. Most ALSV virions purified from tick cells were spherical with a diameter of approximately 40.5 nm. In addition, we found smaller particles of approximately 13.1 nm in diameter. We obtained full genome sequences of all four segments of two of the isolated ALSV strains, and partial sequences of one segment from the third strain. Phylogenetic analysis on genome segment 2 of the JMV group clustered our novel strains with other ALSV strains. We found evidence for the existence of a novel upstream open reading frame in the glycoprotein-coding segment of ALSV and other members of the JMV group.
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Affiliation(s)
- Ivan S. Kholodilov
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Alexander G. Litov
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Alexander S. Klimentov
- Laboratory of Biochemistry, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (A.S.K.); (L.V.G.)
- Laboratory of Biology and Indication of Arboviruses, Department Ivanovsky Institute of Virology, Gamaleya Federal Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia
| | - Oxana A. Belova
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Alexandra E. Polienko
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Nikolai A. Nikitin
- Faculty of Biology, Lomonosov MSU, 119991 Moscow, Russia; (N.A.N.); (V.A.G.)
| | - Alexey M. Shchetinin
- Pathogenic Microorganisms Variability Laboratory, Gamaleya Federal Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia;
| | - Anna Y. Ivannikova
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Lesley Bell-Sakyi
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool L3 5RF, UK;
| | - Alexander S. Yakovlev
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Sergey V. Bugmyrin
- Laboratory for Animal and Plant Parasitology, Institute of Biology of Karelian Research Centre, Russian Academy of Sciences (IB KarRC RAS), 185910 Petrozavodsk, Russia; (S.V.B.); (L.A.B.)
| | - Liubov A. Bespyatova
- Laboratory for Animal and Plant Parasitology, Institute of Biology of Karelian Research Centre, Russian Academy of Sciences (IB KarRC RAS), 185910 Petrozavodsk, Russia; (S.V.B.); (L.A.B.)
| | - Larissa V. Gmyl
- Laboratory of Biochemistry, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (A.S.K.); (L.V.G.)
| | - Svetlana V. Luchinina
- Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 454092 Chelyabinsk, Russia;
| | - Anatoly P. Gmyl
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
| | - Vladimir A. Gushchin
- Faculty of Biology, Lomonosov MSU, 119991 Moscow, Russia; (N.A.N.); (V.A.G.)
- Pathogenic Microorganisms Variability Laboratory, Gamaleya Federal Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia;
| | - Galina G. Karganova
- Laboratory of Biology of Arboviruses, Chumakov Institute of Poliomyelitis and Viral Encephalitides, FSBSI Chumakov FSC R&D IBP RAS, 108819 Moscow, Russia; (I.S.K.); (A.G.L.); (O.A.B.); (A.E.P.); (A.Y.I.); (A.S.Y.); (A.P.G.)
- Department of Organization and Technology of Immunobiological Preparations, Institute for Translational Medicine and Biotechnology, Sechenov University, 119991 Moscow, Russia
- Correspondence: ; Tel.: +7-495-841-9327
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Bikbov MM, Kazakbaeva GM, Zainullin RM, Salavatova VF, Gilmanshin TR, Arslangareeva II, Nikitin NA, Mukhamadieva SR, Yakupova DF, Panda-Jonas S, Khikmatullin RI, Aminev SK, Nuriev IF, Zaynetdinov AF, Uzianbaeva YV, Jonas JB. Prevalence of and factors associated with low Back pain, thoracic spine pain and neck pain in Bashkortostan, Russia: the Ural Eye and Medical Study. BMC Musculoskelet Disord 2020; 21:64. [PMID: 32007098 PMCID: PMC6995220 DOI: 10.1186/s12891-020-3080-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 01/20/2020] [Indexed: 01/28/2023] Open
Abstract
Background Back pain and neck pain are leading causes of the burden of disease worldwide, while information about their prevalence in Russia is missing. Methods The population-based Ural Eye and Medical Study was conducted in a rural and urban region in Bashkortostan/Russia. As part of a detailed systematic examination, we assessed the prevalence of low back pain, thoracic spine pain and neck pain in an interview with standardized questions in 5397 study participants (mean age:58.6 ± 10.6 years;range:40–94 years). Results The mean prevalence of low back pain, thoracic spine pain and neck pain was 2912/5397 (54.0%;95% confidence interval (CI):52.6,55.3), 1271/5397 (23.6%;95%CI:22.4,24.7), and 1570/5397 (29.1%;95%CI:27.9,30.3), respectively. A higher prevalence of low back pain was associated with females (P = 0.04;odds ratio (OR):1.14;95%CI:1.004,1.30), younger age (P < 0.001;OR:0.99;95%CI:0.98,0.99), higher body mass index (P = 0.002;OR:1.02;95%CI:1.01,1.03), lower frequency of vigorous activities during leisure time (P = 0.001;OR:0.79;95%CI:0.69,0.90), more time spent sitting and reclining (P = 0.03;OR:1.00;95%CI:1.00,1.00), higher serum concentration of high-density lipoproteins (P = 0.004;OR:1.10;95%CI:1.03,1.18), higher prothrombin index (P = 0.003;OR:1.01;95%CI:1.003,1.01), higher prevalence of a history of cardiovascular disease (P = 0.004;OR:1.23;95%CI:1.07,1.42), falls (P < 0.004;OR:1.71;95%CI:1.45,2.00), bone fractures (P = 0.01;OR:1.18;95% CI:1.03,1.34), unconsciousness (P < 0.001;OR:1.78;95%CI:1.40,2.25), osteoarthritis (P < 0.001;OR:2.76;95%CI:2.34,3.26), iron-deficiency anemia (P < 0.001;OR:1.87;95%CI:1.41,2.50), and thyroid disorder (P = 0.004;OR:1.37;95%CI:1.10,1.70), fewer days of vegetable intake (P < 0.001;OR:0.89;95%CI:0.85,0.93), smaller amounts of salt intake (P = 0.008;OR:0.97;95%CI:0.94,0.99), higher anxiety score (P < 0.001;OR:1.05;95%CI:1.03,1.06), and in women, history of menopause (P = 0.02;OR:1.36;95%CI:1.05,1.75). The prevalence of thoracic spine pain and neck pain showed similar associations. Conclusions In a Russian population, the prevalence of low back pain, thoracic spine pain and neck pain (54.0, 23.6 and 29.1%, respectively) were correlated with parameters such as the female sex, younger age, higher body mass index, higher anxiety score, higher prevalence of a history of cardiovascular disease, lower frequency of vigorous activities and more time spent sitting or reclining. These data may be of interest for assessing the burden of back and neck pain in Russia as part of the global burden of disease.
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Affiliation(s)
- Mukharram M Bikbov
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia.
| | - Gyulli M Kazakbaeva
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia
| | - Rinat M Zainullin
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia
| | - Venera F Salavatova
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia
| | - Timur R Gilmanshin
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia
| | - Inga I Arslangareeva
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia
| | - Nikolai A Nikitin
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia
| | | | - Dilya F Yakupova
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia
| | - Songhomitra Panda-Jonas
- Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University of Heidelberg, Mannheim, Germany
| | - Renat I Khikmatullin
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia
| | - Said K Aminev
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia
| | - Ildar F Nuriev
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia
| | - Artur F Zaynetdinov
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia
| | - Yulia V Uzianbaeva
- Ufa Eye Research Institute, 90 Pushkin Street, Ufa, 450077, Bashkortostan, Russia
| | - Jost B Jonas
- Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University of Heidelberg, Mannheim, Germany
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21
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Bikbov MM, Kazakbaeva GM, Zainullin RM, Salavatova VF, Arslangareeva II, Panda-Jonas S, Gilmanshin TR, Nikitin NA, Mukhamadieva SR, Yakupova DF, Khikmatullin RI, Aminev SK, Nuriev IF, Zaynetdinov AF, Uzianbaeva YV, Jonas JB. Prevalence, Awareness, and Associated Factors of Airflow Obstruction in Russia: The Ural Eye and Medical Study. Front Public Health 2019; 7:350. [PMID: 31824912 PMCID: PMC6879424 DOI: 10.3389/fpubh.2019.00350] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 11/04/2019] [Indexed: 01/16/2023] Open
Abstract
Background: Although chronic obstructive pulmonary disease and asthma belong to the most important causes of disability and death in all world regions, data about the prevalence of airflow obstruction and asthma in Russia and the associated parameters have been scarce so far. We therefore assessed the prevalence of airflow obstruction and asthma in a Russian population. Methods: The population-based Ural Eye and Medical Study, conducted in a rural and urban region of Bashkortostan/Russia, included 5,392 participants (mean age: 58.6 ± 10.6 years; range: 40-94 years) out of 7,328 eligible individuals. Airflow obstruction was defined spirometrically and asthma by self-reported diagnosis. Results: Airflow obstruction was present in 369 individuals (6.8%; 95% confidence interval (CI): 6.2, 7.5) with an awareness rate of 63.4% (95%CI: 58.5, 68.4) and known duration of 19.5 ± 15.8 years (median: 16 years). Prevalence of undiagnosed airflow obstruction was 2.6% (95%CI: 2.2, 3.1). Higher prevalence of airflow obstruction was associated (multivariable analysis) with higher prevalence of current smoking [P < 0.001; odds ratio (OR): 2.91; 95%CI: 1.76, 4.83] and number of cigarette package years (P < 0.001; OR: 1.03; 95%CI: 1.02, 1.08), female gender (P = 0.03; OR: 1.42; 95%CI: 1.04, 1.93), urban region (P = 0.003; OR: 1.43; 95% CI: 1.12, 1.79), higher prevalence of cardiovascular diseases/stroke (P < 0.001; OR: 1.86; 95%CI: 1.45, 2.39), higher depression score (P = 0.002; OR: 1.05; 95%CI: 1.02, 1.08), and lower physical activity (P = 0.01; OR: 0.71; 95%CI: 0.54, 0.93). Asthma prevalence (2.6%; 95%CI: 2.0, 3.1; known duration: 17.2 ± 15.0 years) was associated with less alcohol consumption (OR: 0.53; 95%CI: 0.33, 0.87; P = 0.01), higher depression score (OR: 1.08; 95%CI: 1.03, 1.12; P < 0.001), and urban region (OR: 0.68; 95CI: 0.49, 0.95; P = 0.0.03). Conclusions: In this Russian population aged 40+ years, the prevalence of airflow obstruction was 6.8% with an awareness rate of 63.4% and smoking as main risk factor. Asthma prevalence was 2.6%.
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Affiliation(s)
| | | | | | | | | | - Songhomitra Panda-Jonas
- Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany
| | | | | | | | | | | | | | | | | | | | - Jost B Jonas
- Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany
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22
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Bikbov MM, Zainullin RM, Kazakbaeva GM, Gilmanshin TR, Salavatova VF, Arslangareeva II, Nikitin NA, Panda-Jonas S, Zaynetdinov AF, Kazakbaev RA, Nuriev IF, Khikmatullin RI, Uzianbaeva YV, Yakupova DF, Aminev SK, Jonas JB. Pterygium Prevalence and Its Associations in a Russian Population: The Ural Eye and Medical Study. Am J Ophthalmol 2019; 205:27-34. [PMID: 30849347 DOI: 10.1016/j.ajo.2019.02.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 02/21/2019] [Accepted: 02/22/2019] [Indexed: 02/06/2023]
Abstract
PURPOSE To assess the prevalence of pterygia and its associations in a population in Russia. DESIGN Population-based cross-sectional study. METHODS The Ural Eye and Medical Study was performed in a rural and urban area in Ufa/Bashkortostan 1300 km east of Moscow. Out of 7328 eligible individuals aged 40+ years, 5899 (80.5%) individuals participated and underwent an ocular and systemic examination. Pterygia, defined as conjunctival extensions onto the clear cornea, were diagnosed upon slit-lamp examination and on corneal photographs. RESULTS Mean pterygium prevalence (per individual) was 138/5888 (2.3%; 95% confidence intervals [CI]:2.0, 2.7), with bilateral occurrence in 45 individuals (32.6% of patients with pterygium; 0.8% of study population). Pterygium prevalence increased from 0.8% (95% CI: 0.02, 1.6) in the age group from 40 to <45 years to 3.6% (95% CI: 2.1, 5.1) in the age group of 75+ years. In multivariable analysis, higher pterygium prevalence was associated with older age (P = .006; odds ratio [OR]: 1.03; 95% CI: 1.01, 1.04), rural vs urban region of habitation (P < .001; OR: 2.33; 95% CI: 1.57, 3.46), and lower level of education (P = .03; OR: 0.89; 95% CI: 0.81, 0.99), while the pterygium prevalence was statistically independent of sex (P = .34), Russian vs non-Russian ethnicity (P = .59), presence of diabetes mellitus (P = 1.00), arterial hypertension (P = .86), vegetarian vs mixed diet (P = 1.00), blood lipid concentration (P > .30), history of cardiovascular disease (P = .49), or axial length (P = .52). CONCLUSIONS In this rural and urban, typically multiethnic Russian study population aged 40+ years, a higher pterygium prevalence (mean: 2.3%) was correlated with older age, rural region of habitation, and lower educational level, while it was statistically independent of most other systemic or ocular parameters. A pterygium was not a biomarker for an internal medical disease.
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Kondakova OA, Nikitin NA, Evtushenko EA, Ryabchevskaya EM, Atabekov JG, Karpova OV. Vaccines against anthrax based on recombinant protective antigen: problems and solutions. Expert Rev Vaccines 2019; 18:813-828. [PMID: 31298973 DOI: 10.1080/14760584.2019.1643242] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Introduction: Anthrax is a dangerous bio-terror agent because Bacillus anthracis spores are highly resilient and can be easily aerosolized and disseminated. There is a threat of deliberate use of anthrax spores aerosol that could lead to serious fatal diseases outbreaks. Existing control measures against inhalation form of the disease are limited. All of this has provided an impetus to the development of new generation vaccines. Areas сovered: This review is devoted to challenges and achievements in the design of vaccines based on the anthrax recombinant protective antigen (rPA). Scientific databases have been searched, focusing on causes of PA instability and solutions to this problem, including new approaches of rPA expression, novel rPA-based vaccines formulations as well as the simultaneous usage of PA with other anthrax antigens. Expert opinion: PA is a central anthrax toxin component, playing a key role in the defense against encapsulated and unencapsulated strains. Subunit rPA-based vaccines have a good safety and protective profile. However, there are problems of PA instability that are greatly enhanced when using aluminum adjuvants. New adjuvant compositions, dry formulations and resistant to proteolysis and deamidation mutant PA forms can help to handle this issue. Devising a modern anthrax vaccine requires huge efforts.
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Affiliation(s)
- Olga A Kondakova
- a Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow , Russian Federation
| | - Nikolai A Nikitin
- a Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow , Russian Federation
| | - Ekaterina A Evtushenko
- a Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow , Russian Federation
| | - Ekaterina M Ryabchevskaya
- a Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow , Russian Federation
| | - Joseph G Atabekov
- a Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow , Russian Federation
| | - Olga V Karpova
- a Department of Virology, Faculty of Biology, Lomonosov Moscow State University , Moscow , Russian Federation
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Ksenofontov AL, Fedorova NV, Badun GA, Serebryakova MV, Nikitin NA, Evtushenko EA, Chernysheva MG, Bogacheva EN, Dobrov EN, Baratova LA, Atabekov JG, Karpova OV. Surface characterization of the thermal remodeling helical plant virus. PLoS One 2019; 14:e0216905. [PMID: 31150411 PMCID: PMC6544241 DOI: 10.1371/journal.pone.0216905] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 04/30/2019] [Indexed: 01/19/2023] Open
Abstract
Previously, we have reported that spherical particles (SPs) are formed by the thermal remodeling of rigid helical virions of native tobacco mosaic virus (TMV) at 94°C. SPs have remarkable features: stability, unique adsorption properties and immunostimulation potential. Here we performed a comparative study of the amino acid composition of the SPs and virions surface to characterize their properties and take an important step to understanding the structure of SPs. The results of tritium planigraphy showed that thermal transformation of TMV leads to a significant increase in tritium label incorporation into the following sites of SPs protein: 41-71 а.a. and 93-122 a.a. At the same time, there was a decrease in tritium label incorporation into the N- and C- terminal region (1-15 a.a., 142-158 a.a). The use of complementary physico-chemical methods allowed us to carry out a detailed structural analysis of the surface and to determine the most likely surface areas of SPs. The obtained data make it possible to consider viral protein thermal rearrangements, and to open new opportunities for biologically active complex design using information about SPs surface amino acid composition and methods of non-specific adsorption and bioconjugation.
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Affiliation(s)
- Alexander L. Ksenofontov
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Natalia V. Fedorova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Gennady A. Badun
- Department of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Marina V. Serebryakova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Nikolai A. Nikitin
- Department of Virology, Lomonosov Moscow State University, Moscow, Russia
| | | | | | - Elena N. Bogacheva
- Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - Eugeny N. Dobrov
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Ludmila A. Baratova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Joseph G. Atabekov
- Department of Virology, Lomonosov Moscow State University, Moscow, Russia
| | - Olga V. Karpova
- Department of Virology, Lomonosov Moscow State University, Moscow, Russia
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Bikbov MM, Fayzrakhmanov RR, Kazakbaeva GM, Zainullin RM, Arslangareeva II, Gilmanshin TR, Salavatova VF, Nikitin NA, Mukhamadieva SR, Yakupova DF, Khikmatullin RI, Zaynetdinov AF, Uzianbaeva YV, Aminev SK, Nuriev IF, Jonas JB. Prevalence, awareness and control of diabetes in Russia: The Ural Eye and Medical Study on adults aged 40+ years. PLoS One 2019; 14:e0215636. [PMID: 31009496 PMCID: PMC6476495 DOI: 10.1371/journal.pone.0215636] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Accepted: 04/01/2019] [Indexed: 01/02/2023] Open
Abstract
Purpose Non-communicable chronic diseases have become the leading causes of mortality and disease burden worldwide. With information about the frequency of diabetes as a major non-communicable chronic disease in Russia being scarce, we assessed the prevalence of diabetes and its associated factors in a rural and urban population in Russia. Methods The Ural Eye and Medical Study is a population-based study in the city of Ufa/Russia and in villages in a distance of 65 km from Ufa. Inclusion criterion was an age of 40+ years. All study participants underwent a standardized interview and a detailed general examination. Diabetes mellitus was defined by a plasma glucose concentration ≥7.0 mmol/L or self-reported history of physician diagnosis of diabetes. Results Out of a population of 7328 eligible individuals, 5899 individuals (2580 (43.7%) men) (participation rate:80.5%) participated (mean age:59.0±10.7 years (range:40–94 years)). Diabetes mellitus was present in 687 individuals (11.7%;95% confidence interval (CI):11.9,12.5). Awareness rate of having diabetes was 500/687 (72.8%;95%CI:69.0,76.0), with mean known duration of diabetes of 10.0±9.4 years. Known type 1 diabetes was present in 44 subjects and known type 2 diabetes in 358 subjects. Prevalence of undiagnosed diabetes was 3.2% (95%CI:2.7,3.6) in the study population. Among patients with diabetes, 59.1% (95%CI:55.4,62.8) received treatment for diabetes, among whom 237 (58.5%;95%CI:53.7,63.3) individuals had adequate glycemic control. In multivariable analysis, higher prevalence of diabetes mellitus was associated with older age (P<0.001; odds ratio (OR):1.03;95%CI:1.01,1.04), higher body mass index (P<0.001;OR:1.07;95%CI:1.04,1.10), lower prevalence of vigorous daily work (P = 0.002;OR0.68;95%CI:0.53,0.87), positive history of arterial hypertension (P = 0.03;OR:1.40;95%CI:1.03,1.89) and cardiovascular diseases (P = 0.001;OR:1.60;95%CI:1.21,2.13) including heart attacks (P = 0.01;OR:1.80;95%CI:1.15,2.81), higher serum concentration of triglycerides (P<0.001;OR:1.51;95%CI:1.30,1.75), higher systolic blood pressure (P = 0.01;OR:1.01;95%CI:1.01,1.02), higher number of meals taken daily (P<0.001;OR:1.46;95%CI:1.25,1.69), and non-Muslim religion (P = 0.02;OR:0.73;95%CI:0.56,0.94). Conclusions In this ethnically mixed, urban and rural Russian population aged 40+ years, the awareness rate of diabetes (72.8%) was relatively high, while the diabetes prevalence (11.7%) was comparable with that of other countries such as China and the USA. Factors associated with higher diabetes prevalence were similar in Russia and these other countries and included older age, higher body mass index and higher serum concentration of triglycerides, lower prevalence of vigorous daily work, arterial hypertension and cardiovascular diseases.
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Affiliation(s)
- Mukharram M. Bikbov
- Ufa Eye Research Institute, Ufa, Bashkortostan, Russia
- * E-mail: (MMB); (JBJ)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Jost B. Jonas
- Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University of Heidelberg, Mannheim, Germany
- * E-mail: (MMB); (JBJ)
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Romanov AB, Shabanov VV, Losik DV, Elesin DA, Stenin IG, Minin SM, Nikitin NA, Mikheenko IL, Pokushalov EA. [Visualisation and Radiofrequency Ablation of Sympathetic Innervation Loci in the Left Atrium in Patients with Paroxysmal Atrial Fibrillation]. ACTA ACUST UNITED AC 2019; 59:33-38. [PMID: 31002037 DOI: 10.18087/cardio.2019.4.10249] [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] [Received: 04/16/2019] [Accepted: 04/16/2019] [Indexed: 11/18/2022]
Abstract
INTRODUCTION A novel cardiac gamma camera utilizes the radiopharmaceutical Iodine-123-Meta-iodobenzylguanidine (123I-MIBG) to visualize cardiac sympathetic innervation. Physiological accumulation of 123I-mIBG provides an anatomical quantitative determination of the structures of the autonomic nervous system (ANS) with discrete uptake areas (DUA) of sympathetic activity located in the left atrium (LA) corresponding to the main ganglionic plexi (GP) clusters that could not previously be visualized. AIM to visualize the DUA of the heart in patients with paroxysmal atrial fibrillation (AF) and to assess the effect of radiofrequency ablation (RFA) on DUA in LA. MATERIALS AND METHODS Computed tomography (CT) of the heart and radionuclide imaging with 123I-mIBG were performed in 15 patients with paroxysmal AF. The results of the study were combined with preliminary taken CT images to create a detailed anatomical map of the sympathetic activity of the heart. The processed images were combined with the 3D reconstruction of the LA, obtained with the navigation system (CARTO 3, CARTO RMT). In DUA, high-frequency stimulation (HFS) followed by RF ablation was performed using the current recommended parameters. RESULTS Forty-eight DUA (median 3 [3; 3]) were identified. Average activity of DUA was 1315 [1171; 1462] cnt / sec / ml. Positive response to HFS in the DUA was obtained in 8 (53.3 %) patients. Prior to ablation, no response was received to HFS in areas of LA outside the DUA. After ablation, there was no response to HFS in the DUA sites. At repeated scans 3 DUA (median 0 [0; 0]; p<0.001 compared with preoperative data) were observed. Activity of DUA significantly decreased to 819 [684; 955] cnt / sec / ml (p<0.001 as compared with preoperative data). Thirteen of 13 of 15 patients (87 %) had no AF / AT / AFL recurrences for 6 month follow up. CONCLUSION In patients with AF, the areas of sympathetic activity in LA can be visualized by physiological localized uptake of 123I-mIBG. Radiofrequency catheter ablation can target the identified sympathetic innervation structures in AF patients precisely and effectively.
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Affiliation(s)
- A B Romanov
- National Medical Research Center named after acad. E. N. Meshalkin, Novosibirsk
| | - V V Shabanov
- National Medical Research Center named after acad. E. N. Meshalkin, Novosibirsk
| | - D V Losik
- National Medical Research Center named after acad. E. N. Meshalkin, Novosibirsk
| | - D A Elesin
- National Medical Research Center named after acad. E. N. Meshalkin, Novosibirsk
| | - I G Stenin
- National Medical Research Center named after acad. E. N. Meshalkin, Novosibirsk
| | - S M Minin
- National Medical Research Center named after acad. E. N. Meshalkin, Novosibirsk
| | - N A Nikitin
- National Medical Research Center named after acad. E. N. Meshalkin, Novosibirsk
| | - I L Mikheenko
- National Medical Research Center named after acad. E. N. Meshalkin, Novosibirsk
| | - E A Pokushalov
- National Medical Research Center named after acad. E. N. Meshalkin, Novosibirsk
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Bikbov MM, Fayzrakhmanov RR, Kazakbaeva GM, Zainullin RM, Salavatova VF, Gilmanshin TR, Arslangareeva II, Nikitin NA, Panda-Jonas S, Mukhamadieva SR, Yakupova DF, Khikmatullin RI, Aminev SK, Nuriev IF, Zaynetdinov AF, Uzianbaeva YV, Jonas JB. Self-reported hearing loss in Russians: the population-based Ural Eye and Medical Study. BMJ Open 2019; 9:e024644. [PMID: 30898811 PMCID: PMC6475155 DOI: 10.1136/bmjopen-2018-024644] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
OBJECTIVE With data on frequency of hearing loss in Russia and Eastern Europe generally lacking, we assessed the prevalence of hearing loss in a Russian population. SETTING The population-based Ural Eye and Medical Study was conducted in the rural and urban regions of Bashkortostan, Russia. PARTICIPANTS With an inclusion criterion of age 40+ years, the study included 5899 (80.5%) out of 7328 eligible individuals (mean age: 59.0±10.7 years; range: 40-94 years). PRIMARY AND SECONDARY OUTCOME MEASURES Hearing loss was examined in 5397 (91.5%) study participants, assessed using a standardised interview with questions from the 'Hearing Handicap Inventory for the Elderly Screening Version (HHIE-S)'. RESULTS The prevalence of self-reported hearing loss (26.1%, 95% CI 24.2 to 27.2) increased from 10.9% (95% CI 8.0 to 13.7) in participants aged 40-45 years old to 59.0% (95% CI 51.6 to 66.4) in those aged 80+ years old. It was higher for men than for women in the 60-80 years age group (38.93%, 95% CI 35.8 to 42.1, vs 32.8%, 95% CI 30.2 to 35.3; p=0.003). On multivariable analysis, higher prevalence of hearing loss was associated with older age (p<0.001; OR [per year of age]: 1.06 [1.06 to 1.07]), male gender (p<0.001; OR: 1.26 [1.09 to 1.47]), higher depression score (p<0.001; OR: 1.06 [1.04 to 1.08]), higher prevalence of headache (p=0.001; OR: 1.27 [1.10 to 1.47]), history of cardiovascular diseases including stroke (p=0.001; OR: 1.32 [1.13 to 1.55]), and osteoarthritis (p<0.001; OR: 1.40 [1.18 to 1.67]), physically vigorous activity during work (p<0.001; OR: 1.40 [1.21 to 1.62]), alcohol consumption (p<0.001; OR: 1.51 [1.28 to 1.78]), and dry eye feeling (p<0.001; OR: 1.67 [1.30 to 2.16]). It was marginally correlated with a higher anxiety score (p=0.07; OR: 1.03 [0.998 to 1.06]). It was independent of diabetes (p=0.52), arterial hypertension (p=0.20), level of education (p=0.11), region of habitation (p=0.70), blood concentration of high-density lipoproteins (p=0.17) and low-density lipoproteins (p=0.52), current smoking (p=0.95) and smoking pack-years (p=0.37), and best corrected visual acuity (p=0.93). CONCLUSIONS As in other countries the prevalence of hearing loss is high in this elderly population in Russia. It is primarily or secondarily associated with older age, depression, male gender, cardiovascular disease and alcohol consumption.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Jost B Jonas
- Department of Ophthalmology, Medical Faculty Mannheim, Ruprecht-Karls-University Heidelberg, Heidelberg, Germany
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Bikbov MM, Kazakbaeva GM, Gilmanshin TR, Zainullin RM, Arslangareeva II, Salavatova VF, Bikbova GM, Panda-Jonas S, Nikitin NA, Zaynetdinov AF, Nuriev IF, Khikmatullin RI, Uzianbaeva YV, Yakupova DF, Aminev SK, Jonas JB. Axial length and its associations in a Russian population: The Ural Eye and Medical Study. PLoS One 2019; 14:e0211186. [PMID: 30707718 PMCID: PMC6358075 DOI: 10.1371/journal.pone.0211186] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 01/04/2019] [Indexed: 12/03/2022] Open
Abstract
Purpose To assess the normal distribution of axial length and its associations in a population of Russia. Methods The population-based Ural Eye and Medical Study included 5,899 (80.5%) individuals out of 7328 eligible individuals aged 40+ years. The participants underwent an ocular and systemic examination. Axial length was measured sonographically (Ultra-compact A/B/P ultrasound system, Quantel Medical, Cournon d'Auvergne, France). Results Biometric data were available for 5707 (96.7%) individuals with a mean age of 58.8±10.6 years (range:40–94 years; 25%, 50%, 75% quartile: 51.0, 58.0, 66.0 years, respectively). Mean axial length was 23.30±1.10 mm (range: 19.02–32.87mm; 95% confidence interval (CI): 21.36–25.89; 25%, 50%, 75% quartile: 22.65mm, 23.23mm, 23.88mm, resp.). Prevalences of moderate myopia (axial length:24.5-<26.5mm) and high myopia (axial length >26.5mm) were 555/5707 (8.7%;95%CI:9.0,10.5) and 78/5707 (1.4%;95%CI:1.1,1.7), respectively. Longer axial length (mean:23.30±1.10mm) was associated (correlation coefficient r2:0.70) with older age (P<0.001;standardized regression coefficient beta:0.14), taller body height (P<0.001;beta:0.07), higher level of education (P<0.001;beta:0.04), higher intraocular pressure (P<0.001;beta:0.03), more myopic spherical refractive error (P<0.001;beta:-0.55), lower corneal refractive power (P<0.001;beta:-0.44), deeper anterior chamber depth (P<0.001;beta:0.20), wider anterior chamber angle (P<0.001;beta:0.05), thinner peripapillary retinal nerve fiber layer thickness (P<0.001;beta:-0.04), higher degree of macular fundus tessellation (P<0.001;beta:0.08), lower prevalence of epiretinal membranes (P = 0.01;beta-0.02) and pseudoexfoliation (P = 0.007;beta:-0.02) and higher prevalence of myopic maculopathy (P<0.001;beta:0.08). In that model, prevalence of age-related macular degeneration (any type: P = 0.84; early type: P = 0.46), diabetic retinopathy (P = 0.16), and region of habitation (P = 0.27) were not significantly associated with axial length. Conclusions Mean axial length in this typically multi-ethnic Russian study population was comparable with values from populations in Singapore and Beijing. In contrast to previous studies, axial length was not significantly related with the prevalences of age-related macular degeneration and diabetic retinopathy or region of habitation.
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Affiliation(s)
- Mukharram M. Bikbov
- Ufa Eye Research Institute, Ufa, Bashkortostan, Russia
- * E-mail: (MMB); (JBJ)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Jost B. Jonas
- Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University of Heidelberg, Mannheim, Germany
- * E-mail: (MMB); (JBJ)
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Piskunov VS, Piskunov IS, Nikitin NA, Vlasova MM. [A case of the fracture of the temporal bone pyramid resulting in the fatal outcome]. Vestn Otorinolaringol 2018; 83:51-53. [PMID: 29697656 DOI: 10.17116/otorino201883251-53] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The authors report a clinical case of the fracture of the base of the skull with the concomitant damage to the sigmoid sinus, jugular vein, and internal carotid artery in the temporal bone pyramid. The injury was associated with massive bleeding from the external acoustic canal that resulted in the death of the patient.
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Affiliation(s)
- V S Piskunov
- Kursk State Medical University, Department of Otorhinolarungology, Ministry of Health of the Russian Federation, Kursk, Russia, 305000
| | - I S Piskunov
- Kursk State Medical University, Department of Radiodiagnostics and Therapy, Ministry of Health of the Russian Federation, Kursk, Russia, 305000
| | - N A Nikitin
- Kursk State Medical University, Department of Otorhinolarungology, Ministry of Health of the Russian Federation, Kursk, Russia, 305000
| | - M M Vlasova
- Kursk State Medical University, Department of Radiodiagnostics and Therapy, Ministry of Health of the Russian Federation, Kursk, Russia, 305000
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Nikitin NA, Zenin VA, Trifonova EA, Ryabchevskaya EM, Kondakova OA, Fedorov AN, Atabekov JG, Karpova OV. Assessment of structurally modified plant virus as a novel adjuvant in toxicity studies. Regul Toxicol Pharmacol 2018; 97:127-133. [PMID: 29932979 DOI: 10.1016/j.yrtph.2018.06.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 02/14/2018] [Revised: 05/31/2018] [Accepted: 06/16/2018] [Indexed: 01/19/2023]
Abstract
Spherical particles (SPs) generated by thermally denatured tobacco mosaic virus (TMV) coat protein can act as an adjuvant, as they are able to enhance the magnitude and longevity of immune responses to different antigens. Here, the toxicity of TMV SPs was assessed prior to it being offered as a universal safe adjuvant for the development of vaccine candidates. The evaluation included nonclinical studies of a local tolerance following the single administration of TMV SPs, and of the local and systemic effects following repeated administrations of TMV SPs. These were conducted in mice, rats and rabbits. General health status, haematology and blood chemistry parameters were monitored on a regular basis. Also, reproductive and development toxicity were studied. No significant signs of toxicity were detected following single or repeated administrations of the adjuvant (TMV SPs). The absence of toxicological effects following the injection of TMV SPs is promising for the further development of recombinant vaccine candidates with TMV SPs as an adjuvant.
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Affiliation(s)
- N A Nikitin
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119234, Russian Federation.
| | - V A Zenin
- Group of Molecular Biotechnology, Federal State Institution «Federal Research Centre «Fundamentals of Biotechnology» of the Russian Academy of Sciences», 33-2 Leninsky pr., Moscow, 119071, Russian Federation
| | - E A Trifonova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119234, Russian Federation
| | - E M Ryabchevskaya
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119234, Russian Federation
| | - O A Kondakova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119234, Russian Federation
| | - A N Fedorov
- Group of Molecular Biotechnology, Federal State Institution «Federal Research Centre «Fundamentals of Biotechnology» of the Russian Academy of Sciences», 33-2 Leninsky pr., Moscow, 119071, Russian Federation
| | - J G Atabekov
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119234, Russian Federation
| | - O V Karpova
- Department of Virology, Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119234, Russian Federation
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Bikbov MM, Fayzrakhmanov RR, Kazakbaeva GM, Zainullin RM, Salavatova VF, Gilmanshin TR, Arslangareeva II, Nikitin NA, Panda-Jonas S, Mukhamadieva SR, Yakupova DF, Khikmatullin RI, Aminev SK, Nuriev IF, Zaynetdinov AF, Uzianbaeva YV, Jonas JB. Frequency and Associated Factors of Bone Fractures in Russians: The Ural Eye and Medical Study. Sci Rep 2018; 8:7483. [PMID: 29749378 PMCID: PMC5945615 DOI: 10.1038/s41598-018-25928-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [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: 11/24/2017] [Accepted: 05/02/2018] [Indexed: 12/27/2022] Open
Abstract
With information about frequency of bone fractures in Russia mostly missing, we assessed the frequency of previous bone fractures in a Russian population. The population-based study Ural Eye and Medical Study included 5899 (80.5%) out of 7328 eligible individuals (mean age: 59.0 ± 10.7 years; range: 40–94 years). The history of previous bone fractures was assessed in a standardized interview for 5397 (91.5%) individuals. Mean frequency of any previous bone fracture was 1650/5397 (30.6%; 95% confidence interval (CI): 29, 3, 31.8). In multivariate analysis, higher frequency of bone fractures was associated with male sex (P < 0.001; odds ratio (OR): 1.67; 95% CI: 1.41, 2.00), urban region (P < 0.001; OR: 1.45; 95% CI: 1.23, 1.72), higher prevalence of vigorous activity during leisure (P < 0.001; OR: 1.42; 95% CI: 1.20, 1.68), current smoking (P = 0.001; OR: 1.46; 95% CI: 1.16, 1.82) and higher prevalence of cardiovascular disease (P = 0.007; OR: 1.29; 95% CI: 1.07, 1.56), low blood pressure episodes with hospital admission (P = 0.001; OR: 2.08; 95% CI: 1.37, 3.16), tumbling (P < 0.001; OR: 2.58; 95% CI: 1.37, 3.16) and thoracic spine pain (P < 0.001; OR: 1.43; 95% CI: 1.18, 1.73). In women, menopause (P < 0.001; OR: 2.17; 95% CI: 1.47, 3.22) was additionally associated. The most common single-bone fractures involved leg and knee (229/5397; 4.2%), hand in general (n = 169; 3.1%) or hand wrist only (n = 97; 1.8%), arm (n = 94; 1.7%) and ankle (n = 67; 1.2%). Severe fractures included spine (n = 35; 0.6%), os sacrum (n = 10; 0.2%), skull (n = 6; 0.1%), pelvis (n = 5; 0.1%) and hip (n = 22; 0.4%). Most frequent combined fractures included as most important part the leg (n = 90; 1.7%), spine (n = 18; 0.3%), and hip (n = 18; 0.3). These data give hints on the epidemiology of bone fractures in Russia.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Songhomitra Panda-Jonas
- Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany
| | | | | | | | - Said K Aminev
- Ufa Eye Research Institute, Ufa, Bashkortostan, Russia
| | | | | | | | - Jost B Jonas
- Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany.
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Abstract
Large quantities of potato leafroll virus (PLRV) antigen are difficult to obtain because this virus accumulates in plants at a low titer. To overcome this problem, we constructed a binary vector containing chimeric cDNA, in which the coat protein (CP) gene of the crucifer infecting tobacco mosaic virus (crTMV) was substituted for the coat protein gene of PLRV. The PLRV movement protein (MP) gene, which overlaps completely with the CP gene, was doubly mutated to eliminate priming of the PLRV MP translation from ATG codons with no changes to the amino acid sequence of the CP. The untranslated long intergenic region located upstream of the CP gene was removed from the construct. Transcribed powerful tobamovirus polymerase of the produced vector synthesized PLRV CP gene that was, in turn, translated into the protein. CP PLRV packed RNAs from the helical crTMV in spherical virions. Morphology, size and antigenic specificities of the wild-type and chimeric virus were similar. The yield of isolated chimera was about three orders higher than the yield of native PLRV. The genetic manipulations facilitated the generation of antibodies against the chimeric virus, which recognize the wild-type PLRV.
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Affiliation(s)
- Eugene V Skurat
- Department of Biology, Lomonosov Moscow State University, Moscow, Russian Federation, 119992
| | - Konstantin O Butenko
- Department of Biology, Lomonosov Moscow State University, Moscow, Russian Federation, 119992
| | - Olga A Kondakova
- Department of Biology, Lomonosov Moscow State University, Moscow, Russian Federation, 119992
| | - Nikolai A Nikitin
- Department of Biology, Lomonosov Moscow State University, Moscow, Russian Federation, 119992
| | - Olga V Karpova
- Department of Biology, Lomonosov Moscow State University, Moscow, Russian Federation, 119992
| | - Yuri F Drygin
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russian Federation, 119992.
| | - Joseph G Atabekov
- Department of Biology, Lomonosov Moscow State University, Moscow, Russian Federation, 119992
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russian Federation, 119992
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Donchenko EK, Pechnikova EV, Mishyna MY, Manukhova TI, Sokolova OS, Nikitin NA, Atabekov JG, Karpova OV. Structure and properties of virions and virus-like particles derived from the coat protein of Alternanthera mosaic virus. PLoS One 2017; 12:e0183824. [PMID: 28837650 PMCID: PMC5570366 DOI: 10.1371/journal.pone.0183824] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/11/2017] [Indexed: 01/01/2023] Open
Abstract
Plant viruses and their virus-like particles (VLPs) have a lot of advantages for biotechnological applications including complete safety for humans. Alternanthera mosaic virus (AltMV) is a potentially promising object for design of novel materials. The 3D structures of AltMV virions and its VLPs were obtained by single particle EM at ~13Å resolution. The comparison of the reconstructions and a trypsin treatment revealed that AltMV CPs possesses a different fold in the presence (virions) and absence of viral RNA (VLPs). For the first time, the structure of morphologically similar virions and virus-like particles based on the coat protein of a helical filamentous plant virus is shown to be different. Despite this, both AltMV virions and VLPs are stable in a wide range of conditions. To provide a large amount of AltMV for biotechnology usage the isolation procedure was modified.
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Affiliation(s)
| | - Evgeniya V. Pechnikova
- Laboratory of Electron Microscopy, V.A. Shoubnikov Institute of Crystallography of Russian Academy of Sciences, Moscow, Russia
- Nano-, Bio-, Information, Cognitive, Socio-Humanistic (NBICS) Science and Technology Center, National Research Centre "Kurchatov Institute", Moscow, Russia
| | | | | | - Olga S. Sokolova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | | | | | - Olga V. Karpova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
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Petrova EK, Dmitrieva AA, Trifonova EA, Nikitin NA, Karpova OV. The key role of rubella virus glycoproteins in the formation of immune response, and perspectives on their use in the development of new recombinant vaccines. Vaccine 2016; 34:1006-11. [PMID: 26776468 DOI: 10.1016/j.vaccine.2016.01.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 08/03/2015] [Revised: 12/29/2015] [Accepted: 01/05/2016] [Indexed: 12/23/2022]
Abstract
Rubella is a highly contagious viral disease which is mostly threatens to women of reproductive age. Existent live attenuated vaccines are effective enough, but have some drawbacks and are unusable for a certain group of people, including pregnant women and people with AIDS and other immunodeficiency. Thereby the development of alternative non-replicating, recombinant vaccines undoubtedly is needed. This review discusses the protein E1 and E2 role in formation of immune response and perspectives in development of new generation recombinant vaccines using them.
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Affiliation(s)
- Ekaterina K Petrova
- Faculty of Biology, Department of Virology, Lomonosov Moscow State University, 1/12 Leninskie Gory, Moscow 119234, Russia.
| | - Anastasia A Dmitrieva
- Faculty of Biology, Department of Virology, Lomonosov Moscow State University, 1/12 Leninskie Gory, Moscow 119234, Russia
| | - Ekaterina A Trifonova
- Faculty of Biology, Department of Virology, Lomonosov Moscow State University, 1/12 Leninskie Gory, Moscow 119234, Russia
| | - Nikolai A Nikitin
- Faculty of Biology, Department of Virology, Lomonosov Moscow State University, 1/12 Leninskie Gory, Moscow 119234, Russia
| | - Olga V Karpova
- Faculty of Biology, Department of Virology, Lomonosov Moscow State University, 1/12 Leninskie Gory, Moscow 119234, Russia
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Petrova EK, Nikitin NA, Trifonova EA, Protopopova AD, Karpova OV, Atabekov JG. The 5'-proximal region of Potato virus X RNA involves the potential cap-dependent "conformational element" for encapsidation. Biochimie 2015; 115:116-9. [PMID: 26006294 DOI: 10.1016/j.biochi.2015.05.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 05/14/2015] [Indexed: 11/16/2022]
Abstract
Filamentous helical Potato virus X (PVX) can be regarded as one of the well-studied viruses. Nevertheless, some aspects of the PVX assembly remained obscure. Previously, we have shown that the presence of a cap structure at the 5' end of PVX RNA is indispensable for assembly of viral ribonucleoprotein (vRNP) particles varying in length. Here, most significantly, removal of the cap structure from previously capped PVX RNA did not affect the efficiency of decapped RNA molecules to be assembled into vRNP. This result provided evidence that the cap structure by itself does not act as a signal for initiation of vRNP assembly. These observations allowed to presume that the capping triggers some spatial changes in the 5'-proximal site of PVX RNA creating a "conformational encapsidation signal for vRNP assembly", which is capable of triggering vRNP assembly in the absence of cap structure. Apparently, during capping the 5'-proximal segment of PVX RNA acquires a unique conformation which is stable to be retained even after cap removal.
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Affiliation(s)
- E K Petrova
- Biology Department, Lomonosov Moscow State University, Moscow 119234, Russia.
| | - N A Nikitin
- Biology Department, Lomonosov Moscow State University, Moscow 119234, Russia
| | - E A Trifonova
- Biology Department, Lomonosov Moscow State University, Moscow 119234, Russia
| | - A D Protopopova
- Scientific Research Institute of Physical-Chemical Medicine, Moscow 119435, Russia
| | - O V Karpova
- Biology Department, Lomonosov Moscow State University, Moscow 119234, Russia
| | - J G Atabekov
- Biology Department, Lomonosov Moscow State University, Moscow 119234, Russia; A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow 119991, Russia
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Nikitin NA, Malinin AS, Trifonova EA, Rakhnyanskaya AA, Yaroslavov AA, Karpova OV, Atabekov JG. Proteins immobilization on the surface of modified plant viral particles coated with hydrophobic polycations. J Biomater Sci Polym Ed 2014; 25:1743-54. [PMID: 25121344 DOI: 10.1080/09205063.2014.946877] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Two hydrophobic cations based on poly-N-ethyl-vinylpyridine were used to produce biologically active complexes. The complexes obtained from tobacco mosaic virus (TMV) spherical particles (SPs), hydrophobic polycation, and a model protein were stable and did not aggregate in solution, particularly at high ionic strengths. The nucleic acid-free SPs were generated by thermal remodeling of the TMV (helical rod-shaped plant virus). The model protein preserved its antigenic activity in the ternary complex (SP-polycation-protein). Immobilization of proteins on the surface of SPs coated with hydrophobic cation is a promising approach to designing biologically active complexes used in bionanotechnologies.
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Affiliation(s)
- Nikolai A Nikitin
- a Faculty of Biology , Lomonosov Moscow State University , Moscow , Russia
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Petrova EK, Nikitin NA, Protopopova AD, Arkhipenko MV, Yaminsky IV, Karpova OV, Atabekov JG. The role of the 5'-cap structure in viral ribonucleoproteins assembly from potato virus X coat protein and RNAs. Biochimie 2013; 95:2415-22. [PMID: 24036171 DOI: 10.1016/j.biochi.2013.09.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 09/02/2013] [Indexed: 12/01/2022]
Abstract
The potato virus X (PVX) virion can be reconstituted in vitro from the virus coat protein (CP) and RNA; heterologous RNAs may be used as well. In our recent study, structure and properties of cognate and heterologous viral ribonucleoproteins (vRNPs) were demonstrated to be similar to those of native virions. The assembly was found to be initiated at the 5' terminus of an RNA and was not dependent on RNA sequence. The aim of the present study was to search for a signal or an essential structural element that directs packaging of viral genetic material into vRNPs. vRNPs were formed by incubation of the PVX CP with heterologous capped RNAs, their functional fragments lacking the cap structure, as well as the capped and uncapped transcripts corresponding to the 5'-terminal region of the genomic PVX RNA. Experimental data show that the presence of the cap structure at the 5' end of a nucleic acid is an important condition for vRNP assembly from RNA and CP. Presumably, the 5'-cap affects conformational state of the RNA region responsible for the efficient interaction with CP and creates conformational encapsidation signal for vRNP assembly.
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Affiliation(s)
- Ekaterina K Petrova
- Biology Department, Lomonosov Moscow State University, Moscow 119991, Russia
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Dobrov EN, Nikitin NA, Trifonova EA, Parshina EY, Makarov VV, Maksimov GV, Karpova OV, Atabekov JG. β-structure of the coat protein subunits in spherical particles generated by tobacco mosaic virus thermal denaturation. J Biomol Struct Dyn 2013; 32:701-8. [PMID: 24404770 DOI: 10.1080/07391102.2013.788983] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Conversion of the rod-like tobacco mosaic virus (TMV) virions into "ball-like particles" by thermal denaturation at 90-98 °C had been described by R.G. Hart in 1956. We have reported recently that spherical particles (SPs) generated by thermal denaturation of TMV at 94-98 °C were highly stable, RNA-free, and water-insoluble. The SPs were uniform in shape but varied widely in size (53-800 nm), which depended on the virus concentration. Here, we describe some structural characteristics of SPs using circular dichroism, fluorescence spectroscopy, and Raman spectroscopy. It was found that the structure of SPs protein differs strongly from that of the native TMV and is characterized by coat protein subunits transition from mainly (about 50%) α-helical structure to a structure with low content of α-helices and a significant fraction of β-sheets. The SPs demonstrate strong reaction with thioflavin T suggesting the formation of amyloid-like structures.
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Affiliation(s)
- Evgeny N Dobrov
- a A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University , 1/40 Leninskie gory, Moscow , 119991 , Russia
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Arkhipenko MV, Petrova EK, Nikitin NA, Protopopova AD, Dubrovin EV, Yaminskii IV, Rodionova NP, Karpova OV, Atabekov JG. Characteristics of Artificial Virus-like Particles Assembled in vitro from Potato Virus X Coat Protein and Foreign Viral RNAs. Acta Naturae 2011. [DOI: 10.32607/20758251-2011-3-3-40-46] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Babushkin AE, Semenova EN, Nikitin NA. [Nodular necrotic scleritis (Franceschetti-Bishler syndrome)]. Vestn Oftalmol 2009; 125:47-50. [PMID: 19517834] [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: 05/27/2023]
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Orenburkina OI, Babushkin AE, Nikitin NA. [Biological role of nitric oxide in ophthalmopathology]. Vestn Oftalmol 2007; 123:40-2. [PMID: 17650610] [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: 05/16/2023]
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Karpova OV, Arkhipenko MV, Zaiakina OV, Nikitin NA, Kiseleva OI, Kozlovskiĭ SV, Rodionova NP, Atabekov IG. [Translational regulation of potato virus X RNA-coat protein complexes: the key role of a coat protein N-terminal peptide]. Mol Biol (Mosk) 2006; 40:703-10. [PMID: 16913229] [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: 05/11/2023]
Abstract
The efficiency of in vitro translation of potato virus X (PVX) RNA within vRNP complexes assembled from genomic RNA and viral CP was examined. The vRNP particles contain the 5'-proximal RNA segments encapsidated by helically arranged CP head-like portions heterogeneous in length and the CP-free RNA tail. Translation of RNA is completely repressed upon incubation with PVX CP and is accompanied by vRNP particles production. By contrast, translation is activated in vRNPs in vitro assembled using two CP forms, differing in the principals of their N-terminal peptides modification. The N-terminal peptide of PVX CP represents the major phosphorylation site(s) for Thr/Ser-specific protein kinases. It was shown that: (i) CP phosphorylation results in a translational activation of vRNP; (ii) removal of N-terminal peptide from CP abolished activation and CP retains the translation repressing ability. It was suggested that substitution of Ser/Thr residues by non-phosphorylated Ala/Gly in N-terminal peptide of the mutant CP will led to a complete inhibition of vRNP translation. However, opposite results were obtained in our experiments: (i) RNA of such mutant virus (PVX-ST) was efficiently translated within the virions; (ii) RNA of a wild-type (wt) PVX also efficiently translated in mixedly assembled vRNP "wt PVX RNA + PVX-ST CP"; (iii) opposite result (repression of translation) was obtained with "mixed" vRNP (PVX-ST RNA + wtPVX CP). Therefore, the N-terminal peptide located at the surface of the particle and of the particles plays a key role in translation activation of the RNA encapsidated in vRNP and native virions.
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Nikitin NA. ["Difficult" duodenal stump in emergency surgery of duodenal ulcer]. Khirurgiia (Mosk) 2002:36-9. [PMID: 11505665] [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: 02/21/2023]
Abstract
Analysis of surgical prophylactic measures of sutures insufficiency of difficult duodenal stump in stomach resection by Bilrot-II in 110 patients with complications of duodenal ulcers required urgent surgery are presented. In study group (43 patients) complex approach to surgical prophylactic measures including diagnosis and correction of chronic disorders of duodenal passability (revealed in 69.8% cases) and individualization of suturing method of duodenal stump was used. In control group (67 patients) traditional external drainage of stump was used as a main prophylactic measure in high risk of complications, method of stump treatment was not individual. Suture insufficiency of duodenal stump was revealed only in control group in 10.4% (7 patients) with 57.1% mortality (4 patients died). General lethality in Group 1 was 4.7% (2 patients), in 2nd--13.4% (9 patients), 6% operated of them died due to insufficiency of duodenal stump. In the structure of death causes, duodenal stump suture incompetence heads the list (44.4%).
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Perestoronin IN, Korshunova TP, Nikitin NA, Noskov BN. [The treatment of pylephlebitis of appendicular origin]. Vestn Khir Im I I Grek 1994; 152:48-9. [PMID: 7701745] [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: 01/26/2023]
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Nikitin NA, Perestoronin IN, Korshunova TP, Leukhina TA. [The surgical treatment of severe forms of alkaline reflux gastritis]. Vestn Khir Im I I Grek 1992; 148:5-9. [PMID: 1338838] [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: 12/26/2022]
Abstract
An examination of 9 patients with primary and postoperative reflux gastritis has found severe forms subject to surgical correction. When choosing the operative method, not only the intensity of reflux of the duodenal content and the character of alterations of gastric mucosa were taken into consideration but also the cause of chronic disorders of the duodenal patency. In all the patients complete disappearance of preoperative symptoms was noted.
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Tsvetkov VN, Kiselev LL, Liubina SI, Frolova LI, Klenin SI, Skazka VS, Nikitin NA. [Hydrodynamic properties and optic anisotrophy of the molecules of transfer RNA in aqueous solutions]. Biokhimiia 1965; 30:302-9. [PMID: 5883877] [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: 01/17/2023]
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