173 results on '"Kiselev OI"'
Search Results
2. Safety and efficacy of p62 DNA vaccine ELENAGEN in a first-in-human trial in patients with advanced solid tumors.
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Ponomarenko DM, Klimova ID, Chapygina YA, Dvornichenko VV, Zhukova NV, Orlova RV, Manikhas GM, Zyryanov AV, Burkhanova LA, Badrtdinova II, Oshchepkov BN, Filippova EV, Orlov SV, Kolesnikov SI, Sufianov AA, Baum SR, Zaitzeva OY, Komissarov AB, Grudinin MP, Kiselev OI, Tsyb AF, Venanzi F, Shcherbinina V, Chursov A, Gabai VL, and Shneider AM
- Abstract
Elenagen is a plasmid encoding p62/SQSTM1, the first DNA vaccine possessing two mutually complementing mechanisms of action: it elicits immune response against p62 and mitigates systemic chronic inflammation. Previously, Elenagen demonstrated anti-tumor efficacy and safety in rodent tumor models and spontaneous tumors in dogs. This multicenter I/IIa trial evaluated safety and clinical activity of Elenagen in patients with advanced solid tumors. Fifteen patients were treated with escalating doses of Elenagen (1- 5 mg per doses, 5 times weekly) and additional 12 patients received 1 mg dose. Ten patients with breast and ovary cancers that progressed after Elenagen were then treated with conventional chemotherapy. Adverse events (AE) were of Grade 1; no severe AE were observed. Cumulatively twelve patients (44%) with breast, ovary, lung, renal cancer and melanoma achieved stable disease for at least 8 wks, with 4 of them (15%) had tumor control for more than 24 wks, with a maximum of 32 wks. The patients with breast and ovary cancers achieved additional tumor stabilization for 12-28 wks when treated with chemotherapy following Elenagen treatment. Therefore, Elenagen demonstrated good safety profile and antitumor activity in advanced solid tumors. Especially encouraging is its ability to restore tumor sensitivity to chemotherapy., Competing Interests: CONFLICTS OF INTEREST Vita Sherbinina, Andrey Chursov, Vladimir L Gabai, and Alexander M Shneider are employees of CureLab Oncology Inc. All other authors have no conflicts of interests.
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- 2017
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3. The influenza A virus NS genome segment displays lineage-specific patterns in predicted RNA secondary structure.
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Vasin AV, Petrova AV, Egorov VV, Plotnikova MA, Klotchenko SA, Karpenko MN, and Kiselev OI
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- Animals, Humans, Genome, Viral, Influenza A virus genetics, Nucleic Acid Conformation, RNA, Viral chemistry, Viral Nonstructural Proteins genetics
- Abstract
Background: Influenza A virus (IAV) is a segmented negative-sense RNA virus that causes seasonal epidemics and periodic pandemics in humans. Two regions (nucleotide positions 82-148 and 497-564) in the positive-sense RNA of the NS segment fold into a multi-branch loop or hairpin structures., Results: We studied 25,384 NS segment positive-sense RNA unique sequences of human and non-human IAVs in order to predict secondary RNA structures of the 82-148 and 497-564 regions using RNAfold software, and determined their host- and lineage-specific distributions. Hairpins prevailed in avian and avian-origin human IAVs, including H1N1pdm1918 and H5N1. In human and swine IAV hairpins distribution varied between evolutionary lineages., Conclusions: These results suggest a possible functional role for these RNA secondary structures and the need for experimental evaluation of these structures in the influenza life cycle.
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- 2016
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4. [Adenosine A2A receptor as a drug target for treatment of sepsis].
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Sivak KV, Vasin AV, Egorov VV, Tsevtkov VB, Kuzmich NN, Savina VA, and Kiselev OI
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- Adenosine therapeutic use, Adenosine A2 Receptor Agonists therapeutic use, Cell Proliferation drug effects, Humans, Inflammation drug therapy, Inflammation metabolism, Inflammation pathology, Lymphocytes drug effects, Lymphocytes immunology, Monocytes drug effects, Monocytes immunology, Sepsis genetics, Sepsis pathology, Adenosine A2 Receptor Agonists metabolism, Molecular Targeted Therapy, Receptor, Adenosine A2A metabolism, Sepsis drug therapy
- Abstract
Sepsis is a generalized infection accompanied by response of the body that manifests in a clinical and laboratory syndrome, namely, in the systemic inflammatory response syndrome (SIRS) from the organism to the infection. Although sepsis is a widespread and life-threatening disease, the assortment of drugs for its treatment is mostly limited by antibiotics. Therefore, the search for new cellular targets for drug therapy of sepsis is an urgent task of modern medicine and pharmacology. One of the most promising targets is the adenosine A(2A) receptor (A(2A)AR). The activation of this receptor, which is mediated by extracellular adenosine, manifests in almost all types of immune cells (lymphocytes, monocytes, macrophages, and dendritic cells) and results in reducing the severity of inflammation and reperfusion injury in various tissues. The activation of adenosine A(2A) receptor inhibits the proliferation of T cells and production of proinflammatory cytokines, which contributes to the activation of the synthesis of anti-inflammatory cytokines, thereby suppressing the systemic response. For this reason, various selective A(2A)AR agonists and antagonists may be considered to be drug candidates for sepsis pharmacotherapy. Nevertheless, they remain only efficient ligands and objects of pre-clinical and clinical trials. This review examines the molecular mechanisms of inflammatory response in sepsis and the structure and functions of A(2A)AR and its role in the pathogenesis of sepsis, as well as examples of using agonists and antagonists of this receptor for the treatment of SIRS and sepsis.
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- 2016
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5. [ANTIVIRAL ACTIVITY OF THE DIHYDROQUERCETIN DURING THE COXSACKIEVIRUS B4 REPLICATION IN VITRO].
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Galochkina AV, Zarubaev VV, Kiselev OI, Babkin VA, and Ostroukhova LA
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- Animals, Antioxidants isolation & purification, Antiviral Agents isolation & purification, Chlorocebus aethiops, Enterovirus B, Human physiology, Larix chemistry, Quercetin isolation & purification, Quercetin pharmacology, Vero Cells, Viral Load drug effects, Antioxidants pharmacology, Antiviral Agents pharmacology, Enterovirus B, Human drug effects, Quercetin analogs & derivatives, Virus Replication drug effects
- Abstract
A study of the antiviral activity of antioxidants against viral infections is believed to be essential for creating complex antiviral agents. Dihydroquercetin is considered as the most active antioxidant extracted from Larix gmelinii. In this work, we present results of experiments of the antiviral properties of dihydroquercetin against a member of the family Picarnaviridae--Coxsackievirus B4 in vitro. We have estimated that dihydroquercetin reduces viral titers at 100 µg/ml concentration as compared with control of virus. We have shown using the plaque assay that CPE of virusis reduced in the presence of dihydroquercetin at 100 µg/ml. Study of the phase of viral lifecycle, in which dihydroquercetin acted, demonstrated that the highest efficacy of the antiviral therapy was reached at early stages of virus reproduction (1-3 hours post infection). These results show that dihydroquercetin has antiviralproperty against Coxsackievirus B4. This drug and other antioxidants can be tested as inhibitors of viral replication.
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- 2016
6. CHRONIC HEPATITIS WITH DOUBLE B/C INFECTION: VIROLOGICAL, CLINICAL, MORPHOLOGICAL CHARACTERISTICS.
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Dudanova OP, Shubina ME, Belavina IA, Elpaeva EA, Pisareva MM, Grudinin MP, and Kiselev OI
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- Adult, Female, Humans, Male, Middle Aged, Russia epidemiology, Statistics as Topic, Virology methods, Coinfection diagnosis, Coinfection physiopathology, Coinfection virology, Hepacivirus genetics, Hepacivirus isolation & purification, Hepatitis B virus genetics, Hepatitis B virus isolation & purification, Hepatitis B, Chronic diagnosis, Hepatitis B, Chronic epidemiology, Hepatitis B, Chronic physiopathology, Hepatitis B, Chronic virology, Hepatitis C, Chronic diagnosis, Hepatitis C, Chronic epidemiology, Hepatitis C, Chronic physiopathology, Hepatitis C, Chronic virology, Liver pathology, Viremia diagnosis
- Abstract
Aim: To estimate the r, virological and clinical characteristics of chronic viral hepatitis (CVH) with double B/C infection., Materials and Methods: We examined 282 patients with CVH. Genomes of hepatitis B virus (HBV) and hepatitis C virus (HCV) were studied by PCR in blood and liver (AmpliSens HBV and Amplisens HCV Russia), nuclear proteins (HBcorAg HBV and NS3 HCV) were determined by immunohistochemical method (Novocastra, UK), HBVgenome was sequenced by the Sanger method using ABI prism BigDye Terminator v3.1 kits and ABIPRISM 3100 analyzer (AppliedBiosystems, USA). Indices of histological activity (HAI), fibrosis, and portal vein (PV) congestion index (CI) were calculated by formula CI=SBB/LB V where S is P V cross section area in cm2 and LB V - linear blood flow velocity in cm/s (Vivid Pro- 7 apparatus, USA)., Results: CVH with double B/C infection was diagnosed in 85 (30.1%) patients including 44.7% with viral genomes and proteins in the live; 42.4% with HCVviremia, and 12.9% with HBJV/HCVviremia. Maximum CVH activity was documented in patients with latent HBV/HCVviremia (ALT 157.2±59.2 U/, HAI 11.6±1.3,fibrosis 2.8±0.7, C1 0.059±0.005); it was minimal inpatients.without viremia (Alt 76.25±63.0 U/I, HAI 6.7+-0.6,fibrosis 1.7±0.5, CI 0.042±0.001;p <0.05). Patients with latent HBV infection had precore/ore and pres/s mutations in HBVgenome and cytoplasmic localization ofHBcorAg., Conclusion: Double B/C infection was diagnosed in 30.1% of the patients with CVH dominated by HCV Patients with latent HBVhadprecore/ore and pres/s mutations. The highest intensity of hepatic cellular inflamation,fibrosis, and PV congestion was associated with HBV/HCV viremia and the lowest with intrahepatic localization of both viruses.
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- 2016
7. [Oncolytic potential of recombinant influenza A virus vectors on a model of malignant glioma in vivo].
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Shurygina APS, Kartashev AV, Kovanko EG, Kiseleva LN, Pustovalov YI, Slita AK, Zarubaev VV, Belyaevskaya SV, Sirotkin AK, Kiselev OI, and Egorov AY
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- Animals, Cell Line, Tumor, Female, Glioma genetics, Glioma metabolism, Humans, Neoplasms, Experimental genetics, Neoplasms, Experimental metabolism, Neoplasms, Experimental pathology, Rats, Glioma therapy, Influenza A virus, Neoplasms, Experimental therapy, Oncolytic Virotherapy, Oncolytic Viruses
- Abstract
Malignant glioma is the most frequently occurring primary brain tumor. Despite significant progress in the diagnostics and treatment of neoplastic diseases the prognosis for patients with III-IV grade gliomas, remains extremely unfavorable. Rapidly developing area in oncology is the employment of therapeutic viruses with natural or genetically engineered oncolytic activity. In the present study we demonstrated the oncolytic potential of a recombinant influenza A virus vector with impaired interferon antagonism function of NS1 protein in treatment of malignant glioma. Recombinant influenza A virus (HA-DS-GFP) expressing green fluorescent protein from the NS1 open reading frame was used as a model vector. HA-DS-GFP virus has shown infectivity towards glioma cells both in vitro, and in vivo (experimental glioma model in rats). Intratumoral inoculation of HA-DS-GFP resulted in a substantial inhibition or complete regression of tumor growth. Our data demonstrate that recombinant influenza vectors have promising potential in therapy of malignant gliomas.
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- 2016
8. Discovery of a new class of antiviral compounds: camphor imine derivatives.
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Sokolova AS, Yarovaya OI, Shernyukov AV, Gatilov YV, Razumova YV, Zarubaev VV, Tretiak TS, Pokrovsky AG, Kiselev OI, and Salakhutdinov NF
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- Animals, Antiviral Agents chemical synthesis, Antiviral Agents chemistry, Camphor chemical synthesis, Camphor chemistry, Dogs, Dose-Response Relationship, Drug, Imines chemical synthesis, Imines chemistry, Madin Darby Canine Kidney Cells, Microbial Sensitivity Tests, Models, Molecular, Molecular Structure, Structure-Activity Relationship, Antiviral Agents pharmacology, Camphor pharmacology, Drug Discovery, Imines pharmacology, Influenza A Virus, H1N1 Subtype drug effects, Influenza A Virus, H5N1 Subtype drug effects
- Abstract
A new class of compounds featuring a camphor moiety has been discovered that exhibits potent inhibitory activity against influenza A(H1N1)pdm09 and A(H5N1) viruses. The synthesized compounds were characterized by spectroscopic analysis; in addition the structures of compound 2 and 14 were elucidated by the X-ray diffraction technique. Structure-activity relationship studies have been conducted to identify the 1,7,7-trimethylbicyclo[2.2.1]heptanes2-ylidene group as the key functional group responsible for the observed antiviral activity. The most potent antiviral compound is imine 2 with therapeutic index more than 500., (Copyright © 2015 Elsevier Masson SAS. All rights reserved.)
- Published
- 2015
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9. [Ebola hemorrhagic fever: Properties of the pathogen and development of vaccines and chemotherapeutic agents].
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Kiselev OI, Vasin AV, Shevyryova MP, Deeva EG, Sivak KV, Egorov VV, Tsvetkov VB, Egorov AY, Romanovskaya-Romanko EA, Stepanova LA, Komissarov AB, Tsybalova LM, and Ignatjev GM
- Abstract
Ebola hemorrhagic fever (EHF) epidemic currently ongoing in West Africa is not the first among numerous epidemics in the continent. Yet it seems to be the worst EHF epidemic outbreak caused by Ebola virus Zaire since 1976 as regards its extremely large scale and rapid spread in the population. Experiments to study the agent have continued for more than 20 years. The EHF virus has a relatively simple genome with seven genes and additional reading frame resulting from RNA editing. While being of a relatively low genetic capacity, the virus can be ranked as a standard for pathogenicity with the ability to evade the host immune response in uttermost perfection. The EHF virus has similarities with retroviruses, but belongs to (-)RNA viruses of a nonretroviral origin. Genetic elements of the virus, NIRV, were detected in animal and human genomes. EHF virus glycoprotein (GP) is a class I fusion protein and shows more similarities than distinctions in tertiary structure with SIV and HIV gp41 proteins and even influenza virus hemagglutinin. EHF is an unusual infectious disease, and studying the molecular basis of its pathogenesis may contribute to new findings in therapy of severe conditions leading to a fatal outcome.
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- 2015
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10. Development of a candidate influenza vaccine based on virus-like particles displaying influenza M2e peptide into the immunodominant region of hepatitis B core antigen: Broad protective efficacy of particles carrying four copies of M2e.
- Author
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Tsybalova LM, Stepanova LA, Kuprianov VV, Blokhina EA, Potapchuk MV, Korotkov AV, Gorshkov AN, Kasyanenko MA, Ravin NV, and Kiselev OI
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- Animals, Antibodies, Viral analysis, Antibodies, Viral blood, Blood immunology, Bronchoalveolar Lavage Fluid immunology, Cross Reactions, Disease Models, Animal, Epitopes genetics, Escherichia coli genetics, Female, Gene Expression, Hepatitis B Core Antigens genetics, Immunoglobulin G analysis, Immunoglobulin G blood, Influenza Vaccines administration & dosage, Influenza Vaccines genetics, Lung virology, Mice, Inbred BALB C, Mutagenesis, Insertional, Orthomyxoviridae Infections prevention & control, Recombinant Fusion Proteins genetics, Recombinant Fusion Proteins immunology, Survival Analysis, T-Lymphocytes immunology, Vaccines, Synthetic administration & dosage, Vaccines, Synthetic genetics, Vaccines, Synthetic immunology, Vaccines, Virus-Like Particle administration & dosage, Vaccines, Virus-Like Particle genetics, Viral Load, Viral Matrix Proteins genetics, Cross Protection, Epitopes immunology, Influenza Vaccines immunology, Vaccines, Virus-Like Particle immunology, Viral Matrix Proteins immunology
- Abstract
A long-term objective when designing influenza vaccines is to create one with broad cross-reactivity that will provide effective control over influenza, no matter which strain has caused the disease. Here we summarize the results from an investigation into the immunogenic and protective capacities inherent in variations of a recombinant protein, HBc/4M2e. This protein contains four copies of the ectodomain from the influenza virus protein M2 (M2e) fused within the immunodominant loop of the hepatitis B virus core antigen (HBc). Variations of this basic design include preparations containing M2e from the consensus human influenza virus; the M2e from the highly pathogenic avian A/H5N1 virus and a combination of two copies from human and two copies from avian influenza viruses. Intramuscular delivery in mice with preparations containing four identical copies of M2e induced high IgG titers in blood sera and bronchoalveolar lavages. It also provoked the formation of memory T-cells and antibodies were retained in the blood sera for a significant period of time post immunization. Furthermore, these preparations prevented the death of 75-100% of animals, which were challenged with lethal doses of virus. This resulted in a 1.2-3.5 log10 decrease in viral replication within the lungs. Moreover, HBc particles carrying only "human" or "avian" M2e displayed cross-reactivity in relation to human (A/H1N1, A/H2N2 and A/H3N2) or A/H5N1 and A(H1N1)pdm09 viruses, respectively; however, with the particles carrying both "human" and "avian" M2e this effect was much weaker, especially in relation to influenza virus A/H5N1. It is apparent from this work that to quickly produce vaccine for a pandemic it would be necessary to have several variations of a recombinant protein, containing four copies of M2e (each one against a group of likely influenza virus strains) with these relevant constructs housed within a comprehensive collection Escherichia coli-producers and maintained ready for use., (Copyright © 2015 Elsevier Ltd. All rights reserved.)
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- 2015
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11. Glycyrrhizic acid derivatives as influenza A/H1N1 virus inhibitors.
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Baltina LA, Zarubaev VV, Baltina LA, Orshanskaya IA, Fairushina AI, Kiselev OI, and Yunusov MS
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- Animals, Antiviral Agents chemical synthesis, Antiviral Agents pharmacology, Cell Survival drug effects, Dogs, Glycyrrhizic Acid chemical synthesis, Glycyrrhizic Acid pharmacology, Influenza A Virus, H1N1 Subtype physiology, Madin Darby Canine Kidney Cells, Virus Replication drug effects, Antiviral Agents chemistry, Glycyrrhizic Acid chemistry
- Abstract
This Letter describes the synthesis and antiviral activity study of some glycyrrhizic acid (GL) derivatives against influenza A/H1N1/pdm09 virus in MDCK cells. Conjugation of GL with l-amino acids or their methyl esters, and amino sugar (d-galactose amine) dramatically changed its activity. The most active compounds were GL conjugates with aromatic amino acids methyl esters (phenylalanine and tyrosine) (SI=61 and 38), and S-benzyl-cysteine (SI=71). Thus modification of GL is a perspective route in the search of new antivirals, and some of GL derivatives are potent as anti-influenza A/H1N1 agents., (Copyright © 2015 Elsevier Ltd. All rights reserved.)
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- 2015
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12. Protection against multiple influenza A virus strains induced by candidate recombinant vaccine based on heterologous M2e peptides linked to flagellin.
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Stepanova LA, Kotlyarov RY, Kovaleva AA, Potapchuk MV, Korotkov AV, Sergeeva MV, Kasianenko MA, Kuprianov VV, Ravin NV, Tsybalova LM, Skryabin KG, and Kiselev OI
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- Animals, Antibodies, Viral blood, Blotting, Western, Enzyme-Linked Immunosorbent Assay, Epitopes immunology, Female, Filaggrin Proteins, Humans, Immunization, Influenza, Human immunology, Influenza, Human virology, Lung immunology, Lung virology, Mice, Mice, Inbred BALB C, Orthomyxoviridae Infections immunology, Orthomyxoviridae Infections virology, Peptide Fragments genetics, Recombinant Fusion Proteins administration & dosage, Recombinant Fusion Proteins genetics, Viral Load, Flagellin immunology, Influenza A virus immunology, Influenza Vaccines immunology, Influenza, Human prevention & control, Orthomyxoviridae Infections prevention & control, Peptide Fragments immunology, Recombinant Fusion Proteins immunology, Viral Matrix Proteins immunology
- Abstract
Matrix 2 protein ectodomain (M2e) is considered a promising candidate for a broadly protective influenza vaccine. M2e-based vaccines against human influenza A provide only partial protection against avian influenza viruses because of differences in the M2e sequences. In this work, we evaluated the possibility of obtaining equal protection and immune response by using recombinant protein on the basis of flagellin as a carrier of the M2e peptides of human and avian influenza A viruses. Recombinant protein was generated by the fusion of two tandem copies of consensus M2e sequence from human influenza A and two copies of M2e from avian A/H5N1 viruses to flagellin (Flg-2M2eh2M2ek). Intranasal immunisation of Balb/c mice with recombinant protein significantly elicited anti-M2e IgG in serum, IgG and sIgA in BAL. Antibodies induced by the fusion protein Flg-2M2eh2M2ek bound efficiently to synthetic peptides corresponding to the human consensus M2e sequence as well as to the M2e sequence of A/Chicken/Kurgan/05/05 RG (H5N1) and recognised native M2e epitopes exposed on the surface of the MDCK cells infected with A/PR/8/34 (H1N1) and A/Chicken/Kurgan/05/05 RG (H5N1) to an equal degree. Immunisation led to both anti-M2e IgG1 and IgG2a response with IgG1 prevalence. We observed a significant intracellular production of IL-4, but not IFN-γ, by CD4+ T-cells in spleen of mice following immunisation with Flg-2M2eh2M2ek. Immunisation with the Flg-2M2eh2M2ek fusion protein provided similar protection from lethal challenge with human influenza A viruses (H1N1, H3N2) and avian influenza virus (H5N1). Immunised mice experienced significantly less weight loss and decreased lung viral titres compared to control mice. The data obtained show the potential for the development of an M2e-flagellin candidate influenza vaccine with broad spectrum protection against influenza A viruses of various origins.
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- 2015
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13. [Comparison of the influenza epidemics in Russia caused by the pandemic virus A(H1N1)pdm09 within the period from 2009 to 2013].
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Karpova LS, Sominina AA, Burtseva EI, Pelikh MY, Feodoritova EL, Popovtseva NM, Stolyarov TP, and Kiselev OI
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- Adolescent, Adult, Age Factors, Aged, Cardiovascular Diseases mortality, Cardiovascular Diseases pathology, Cardiovascular Diseases virology, Child, Child, Preschool, Comorbidity, Endocrine System Diseases mortality, Endocrine System Diseases pathology, Endocrine System Diseases virology, Female, Humans, Incidence, Infant, Infant, Newborn, Influenza A Virus, H1N1 Subtype pathogenicity, Influenza A Virus, H1N1 Subtype physiology, Influenza, Human mortality, Influenza, Human pathology, Influenza, Human virology, Male, Middle Aged, Retrospective Studies, Rural Population, Russia epidemiology, Survival Analysis, Urban Population, Cardiovascular Diseases epidemiology, Endocrine System Diseases epidemiology, Influenza, Human epidemiology, Pandemics
- Abstract
Comparative analysis of the three past epidemics with the participation of the pandemic influenza A(H1N1)pdm09 was conducted according to the results of the epidemiological trials of two WHO National influenza centers for the morbidity, hospitalization, and mortality of the influenza in 59 cities of Russia for the period from 2009 to 2013. The first wave of the pandemic of 2009 was the most severe. Compared with this wave, during the next epidemics of 2011 and 2013, the involvement of urban population in the epidemic was reduced, as well as the morbidity in the people 15-64 years old and schoolchildren 7-14 years old. The duration of the epidemic among the adult population, the mortality rate of the total population, and the mortality rates in all age groups were also decreased. Vice versa, the incidence in the children of preschool age and the elderly people and the duration of the epidemic among children (especially preschool children) were increased. The share of patients 65 years and older, children 0-2 years old, and patients with pathology of the cardiovascular systems among the deceased patients increased to 33.6%.
- Published
- 2015
14. [Clinical efficacy of arbidol (umifenovir) in the therapy of influenza in adults: preliminary results of the multicenter double-blind randomized placebo-controlled study ARBITR].
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Kiselev OI, Maleev VV, Deeva EG, Leneva IA, Selkova EP, Osipova EA, Obukhov AA, Nadorov SA, and Kulikova EV
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- Adolescent, Adult, Aged, Antiviral Agents administration & dosage, Antiviral Agents adverse effects, Common Cold virology, Double-Blind Method, Female, Humans, Indoles administration & dosage, Indoles adverse effects, Influenza, Human virology, Male, Middle Aged, RNA, Viral blood, Russia, Severity of Illness Index, Treatment Outcome, Young Adult, Antiviral Agents therapeutic use, Common Cold drug therapy, Indoles therapeutic use, Influenza, Human drug therapy
- Abstract
Aim: To evaluate the efficacy and safety of Arbidol (umifenovir) in adult patients with influenza., Subjects and Methods: The analysis of the preliminary results of the multicenter double-blind randomized placebo-controlled post-marketing study ARBITR was performed. A total of 293 adults aged 18 to 65 years with influenza or acute respiratory tract infection of no more than 36 hours' duration were enrolled in the study. Individuals were randomized into 2 treatment groups: oral umifenovir 200 mg four times daily for 5 days or placebo four times daily for 5 days. The efficacy endpoints were time to resolution of all symptoms, severity of symptoms and illness, durations of virus shedding., Results: The efficacy of umifenovir was evaluated in the group of 119 (40.6%) patients with influenza: 45 patients with laboratory-confirmed influenza and 74 patients whom diagnosis of influenza was made based on clinical and epidemiological data. Umifenovir had influence on the time to resolution of all symptoms. All symptoms were resolved within the first 60 hours after therapy initiation in 23.8% patients with laboratory-confirmed influenza in the umifenovir group and it was 5.7 times greater compared to placebo group (4.2%) (p < 0.05). Severity of illness, catarrhal symptoms and intoxication was reduced with umifenovir compared to placebo, reducing of severity was most evidently observed within the first 2-3 days following the therapy initiation. Umifenovir had a significant effect on viral shedding. The proportion of patients still shedding influenza virus on day 4 was significantly reduced in the umifenovir group compared to placebo (25 vs 53%, respectively; p < 0.05)., Conclusion: It was found that the effect of umifenovir in the treatment of influenza in adults is most pronounced in the acute stage of the disease and appears in the reduction of time to resolution of all symptoms of the disease, reducing the severity of symptoms of the disease and durations of virus shedding.
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- 2015
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15. Identification of genetic determinants of influenza A virus resistance to adamantanes and neuraminidase inhibitors using biological microarray.
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Heydarov RN, Fesenko EE, Shaskolskiy BL, Klotchenko SA, Vasin AV, Titov SV, Dementieva EI, Zasedatelev AS, Mikhailovich VM, and Kiselev OI
- Subjects
- Adamantane pharmacology, Equipment Design, Influenza A virus drug effects, Microarray Analysis instrumentation, Mutation, Neuraminidase antagonists & inhibitors, Neuraminidase genetics, Viral Matrix Proteins genetics, Viral Proteins antagonists & inhibitors, Viral Proteins genetics, Antiviral Agents pharmacology, Drug Resistance, Viral genetics, Enzyme Inhibitors pharmacology, Influenza A virus genetics, Microarray Analysis methods
- Published
- 2015
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16. Synthesis and antiviral activity of PB1 component of the influenza A RNA polymerase peptide fragments.
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Matusevich OV, Egorov VV, Gluzdikov IA, Titov MI, Zarubaev VV, Shtro AA, Slita AV, Dukov MI, Shurygina AP, Smirnova TD, Kudryavtsev IV, Vasin AV, and Kiselev OI
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- Amino Acid Sequence, Animals, Antiviral Agents chemistry, Antiviral Agents metabolism, Antiviral Agents pharmacology, Dogs, Influenza A Virus, H1N1 Subtype physiology, Influenza A virus physiology, Madin Darby Canine Kidney Cells, Molecular Sequence Data, Oseltamivir pharmacology, Peptide Fragments chemical synthesis, Peptide Fragments chemistry, Peptide Fragments metabolism, Virus Replication drug effects, Influenza A Virus, H1N1 Subtype drug effects, Influenza A virus drug effects, Peptide Fragments pharmacology, RNA-Dependent RNA Polymerase chemistry, Viral Proteins chemistry
- Abstract
This study is devoted to the antiviral activity of peptide fragments from the PB1 protein - a component of the influenza A RNA polymerase. The antiviral activity of the peptides synthesized was studied in MDCK cell cultures against the pandemic influenza strain A/California/07/2009 (H1N1) pdm09. We found that peptide fragments 6-13, 6-14, 26-30, 395-400, and 531-540 of the PB1 protein were capable of suppressing viral replication in cell culture. Terminal modifications i.e. N-acetylation and C-amidation increased the antiviral properties of the peptides significantly. Peptide PB1 (6-14) with both termini modified showed maximum antiviral activity, its inhibitory activity manifesting itself during the early stages of viral replication. It was also shown that the fluorescent-labeled analog of this peptide was able to penetrate into the cell. The broad range of virus-inhibiting activity of PB1 (6-14) peptide was confirmed using a panel of influenza A viruses of H1, H3 and H5 subtypes including those resistant to oseltamivir, the leading drug in anti-influenza therapy. Thus, short peptide fragments of the PB1 protein could serve as leads for future development of influenza prevention and/or treatment agents., (Copyright © 2014 Elsevier B.V. All rights reserved.)
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- 2015
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17. Novel derivatives of usnic acid effectively inhibiting reproduction of influenza A virus.
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Shtro AA, Zarubaev VV, Luzina OA, Sokolov DN, Kiselev OI, and Salakhutdinov NF
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- Animals, Antiviral Agents chemical synthesis, Antiviral Agents pharmacology, Benzofurans chemical synthesis, Cell Survival drug effects, Dogs, Humans, Madin Darby Canine Kidney Cells, Stereoisomerism, Structure-Activity Relationship, Virus Replication drug effects, Antiviral Agents chemistry, Benzofurans chemistry, Benzofurans pharmacology, Influenza A virus physiology
- Abstract
Influenza virus is serious human pathogen leading to high morbidity and mortality all over the world. Due to high rate of mutation, it is able to fast development of drug resistance that makes necessary to search novel antivirals with broad range and alternative targets. In the present study we describe synthesis and anti-viral activity of novel derivatives of usnic acid (2,6-diacetyl-7,9-dihydroxy-8,9b-dimethyl-1,3(2H,9bH)-dibenzo-furandione). It is shown that anti-viral activity of usnic acid can be increased by side moieties introduction. The modification with chalcones appeared to be the most effective. Our study revealed that (-)-usnic acid exhibited higher antiviral activity than its (+)-enantiomer, but in the pairs of enantiomer derivatives such as enamines, pyrazoles and chalcones, the (+)-enantiomers were more potent inhibitors of the virus. For other groups of compounds the inhibiting activities of the enantiomers were comparable. Further optimization of the structure could therefore result in development of novel anti-influenza compound with alternative target and mechanism of virus-inhibiting action., (Copyright © 2014 Elsevier Ltd. All rights reserved.)
- Published
- 2014
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18. Molecular mechanisms enhancing the proteome of influenza A viruses: an overview of recently discovered proteins.
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Vasin AV, Temkina OA, Egorov VV, Klotchenko SA, Plotnikova MA, and Kiselev OI
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- Animals, Humans, Influenza A virus metabolism, Proteome metabolism, Viral Proteins metabolism, Influenza A virus genetics, Influenza, Human virology, Proteome genetics, Viral Proteins genetics
- Abstract
Influenza A virus is one of the major human pathogens. Despite numerous efforts to produce absolutely effective anti-influenza drugs or vaccines, no such agent has been developed yet. One of the main reasons for this complication is the high mutation rate and the specific structure of influenza A viruses genome. For more than 25 years since the first mapping of the viral genome, it was believed that its 8 genome segments encode 10 proteins. However, the proteome of influenza A viruses has turned out to be much more complex than previously thought. In 2001, the first accessory protein, PB1-F2, translated from the alternative open reading frame, was discovered. Subsequently, six more proteins, PB1-N40, PA-X, PA-N155, PA-N182, M42, and NS3, have been found. It is important to pay close attention to these novel proteins in order to evaluate their role in the pathogenesis of influenza, especially in the case of outbreaks of human infections with new avian viruses, such as H5N1 or H7N9. In this review we summarize the data on the molecular mechanisms used by influenza A viruses to expand their proteome and on the possible functions of the recently discovered viral proteins., (Copyright © 2014 Elsevier B.V. All rights reserved.)
- Published
- 2014
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19. Camphor-based symmetric diimines as inhibitors of influenza virus reproduction.
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Sokolova AS, Yarovaya OC, Korchagina DV, Zarubaev VV, Tretiak TS, Anfimov PM, Kiselev OI, and Salakhutdinov NF
- Subjects
- Animals, Antiviral Agents chemical synthesis, Antiviral Agents chemistry, Dogs, Dose-Response Relationship, Drug, Imines chemical synthesis, Imines chemistry, Madin Darby Canine Kidney Cells, Microbial Sensitivity Tests, Models, Molecular, Molecular Structure, Structure-Activity Relationship, Antiviral Agents pharmacology, Camphor chemistry, Imines pharmacology, Influenza A virus drug effects, Virus Replication drug effects
- Abstract
Influenza is a continuing world-wide public health problem that causes significant morbidity and mortality during seasonal epidemics and sporadic pandemics. The purpose of the study was synthesis and investigation of antiviral activity of camphor-based symmetric diimines and diamines. A set of C2-symmetric nitrogen-containing camphor derivatives have been synthesized. The antiviral activity of these compounds was studied against rimantadine- and amantadine-resistant influenza virus A/California/7/09 (H1N1)pdm09 in MDCK cells. The highest efficacy in virus inhibiting was shown for compounds 2a-e with cage moieties bound by aliphatic linkers. The therapeutic index (selectivity index) for 2b exceeded that for reference compounds amantadine, deitiforin and rimantadine almost 10-fold. As shown by structure-activity analysis, the length of the linker has a dramatic effect on the toxicity of compounds. Compound 2e with -C12H24- linker exhibited the lowest toxicity (CTD50=2216μM). Derivatives of camphor, therefore, can be considered as prospective antiinfluenza compounds active against influenza viruses resistant to adamantane-based drugs., (Copyright © 2014 Elsevier Ltd. All rights reserved.)
- Published
- 2014
- Full Text
- View/download PDF
20. [The use of apoptosis inducers in the therapy of experimental influenza infection and preventing of chronic post-influenza lung damage].
- Author
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Zarubaev VV, Tribulovich VG, Beliavskaia SV, Barlev NA, and Kiselev OI
- Subjects
- Animals, Apoptosis drug effects, Cell Proliferation, Dose-Response Relationship, Drug, Epithelial Cells pathology, Epithelial Cells virology, Influenza A Virus, H5N2 Subtype drug effects, Influenza A Virus, H5N2 Subtype growth & development, Lung pathology, Lung virology, Mice, Orthomyxoviridae Infections complications, Orthomyxoviridae Infections mortality, Orthomyxoviridae Infections pathology, Pneumonia, Viral etiology, Pneumonia, Viral mortality, Pneumonia, Viral pathology, Respiratory Mucosa pathology, Respiratory Mucosa virology, Survival Analysis, Time Factors, Viral Load drug effects, Virus Replication drug effects, Antineoplastic Agents pharmacology, Epithelial Cells drug effects, Lung drug effects, Orthomyxoviridae Infections drug therapy, Pneumonia, Viral drug therapy, Respiratory Mucosa drug effects, Retinoids pharmacology
- Abstract
Influenza is a respiratory infection widely spread around the world. Influenza complications are various in nature and in most cases involve the excessive proliferation of cells in respiratory tract as a factor of pathogenesis. In the present work the efficacy of the use of apoptosis inducer 6-[3-(1-adamantyl)-4-hydroxyphenyl]-2-naphtalenecarboxylic acid (AHPN) for prophylaxis of chronic damage on the stage of post- influenza pneumonia has been studied. Mice were infected with influenza virus A/mallard/Pennsylvania/10218/84(H5N2) with further study of the level of influenza virus reproduction in the lungs, specific mortality of animals and morphology of the foci of post-influenza pneumonia on the 15th day post inoculation. AHPN was shown to decrease the infectious activity of the virus in the lungs by 1.2-1.5 log10 EID50/0.2 mL depending on the dose as compared to the control group, in a weak decrease in mortality of animals (protection index was 12.5-37.5%). The application of AHPN restricted both the proliferative and infiltrative component in chronic post-influenza lesions. It demonstrated the most pronounced effect on the lung morphology when applied on days 4 to 7 post inoculation, i. e. in the period of maximal activation of inflammatory tissue infiltration and regeneration of bronchiolar epithelium. In conclusion, the use of apoptosis inducers can partially prevent the development of chronic post-influenza lesions with proliferative component.
- Published
- 2014
21. New quaternary ammonium camphor derivatives and their antiviral activity, genotoxic effects and cytotoxicity.
- Author
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Sokolova AS, Yarovaya CO, Shernyukov CA, Pokrovsky CE, Pokrovsky CA, Lavrinenko VA, Zarubaev VV, Tretiak TS, Anfimov PM, Kiselev OI, Beklemishev AB, and Salakhutdinov NF
- Subjects
- Animals, Antiviral Agents chemical synthesis, Antiviral Agents toxicity, Binding Sites, Bridged Bicyclo Compounds chemical synthesis, Bridged Bicyclo Compounds toxicity, Camphor chemical synthesis, Camphor toxicity, Cell Line, Tumor, Cell Survival drug effects, Dogs, Escherichia coli drug effects, Escherichia coli genetics, Humans, Influenza A Virus, H1N1 Subtype drug effects, Influenza A Virus, H1N1 Subtype metabolism, Madin Darby Canine Kidney Cells, Molecular Docking Simulation, Mutagenicity Tests, Protein Structure, Tertiary, Quaternary Ammonium Compounds chemical synthesis, Quaternary Ammonium Compounds toxicity, Viral Matrix Proteins chemistry, Viral Matrix Proteins metabolism, Antiviral Agents chemistry, Bridged Bicyclo Compounds chemistry, Camphor analogs & derivatives, Quaternary Ammonium Compounds chemistry
- Abstract
The synthesis and biological evaluation of a novel series of dimeric camphor derivatives are described. The resulting compounds were studied for their antiviral activity, cyto- and genotoxicity. Compounds 3a and 3d in which the quaternary nitrogen atoms are separated by the C5H10 and С9H18 aliphatic chain, exhibited the highest efficiency as an agent inhibiting the reproduction of the influenza virus A(H1N1)pdm09. The cytotoxicity data of compounds 3 and 4 revealed their moderate activity against malignant cell lines; compound 3f had the highest activity for the CEM-13 cells. These results show close agreement with the data of independent studies on toxicity of these compounds, in particular that the toxicity of compounds strongly depends on spacer length., (Copyright © 2013 Elsevier Ltd. All rights reserved.)
- Published
- 2013
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22. [Universal diagnostic oligonucleotide microarray for subtyping of human and animal influenza A viruses].
- Author
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Vasin AV, Sandybaev NT, Plotnikova MA, Klotchenko SA, Cherviakova OV, Strochkov VM, Taĭlakova ÉT, Temkina OA, Brodskaia AV, Zabrodskaia IaA, Nikulenkov KP, Egorov VV, Koshemetov ZhK, Sancyzbaĭ AR, and Kiselev OI
- Subjects
- Animals, Humans, Influenza A virus genetics, Influenza A virus isolation & purification, Influenza, Human diagnosis, Influenza, Human virology, Lab-On-A-Chip Devices, Orthomyxoviridae Infections diagnosis, RNA, Viral genetics, Genome, Viral, Influenza A virus classification, Molecular Typing methods, Oligonucleotide Array Sequence Analysis instrumentation, Orthomyxoviridae Infections virology, RNA, Viral classification, Software
- Abstract
The diagnostic oligonucleotide microarray for subtyping of human and animal influenza A viruses (IAVs) was developed. We proposed a simple method of the fluorescent labeling of genomic segments of all known IAVs subtypes, the composition of the hybridization buffer, as well as the software of the data processing. 48 IAVs strains of different subtypes were analyzed using our microarray. All of them were identified, while 45 of 48 strains were unambiguously subtyped.
- Published
- 2013
23. An inactivated, adjuvanted whole virion clade 2.2 H5N1 (A/Chicken/Astana/6/05) influenza vaccine is safe and immunogenic in a single dose in humans.
- Author
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Sansyzbay AR, Erofeeva MK, Khairullin BM, Sandybayev NT, Kydyrbayev ZK, Mamadaliyev SM, Kassenov MM, Sergeeva MV, Romanova JR, Krivitskaya VZ, Kiselev OI, and Stukova MA
- Subjects
- Adult, Aluminum Hydroxide administration & dosage, Aluminum Hydroxide adverse effects, Animals, Antibodies, Viral blood, Cross Reactions, Hemagglutination Inhibition Tests, Humans, Influenza Vaccines administration & dosage, Influenza, Human virology, Kazakhstan, Male, Middle Aged, Neutralization Tests, Reverse Genetics, Russia, Vaccines, Inactivated administration & dosage, Vaccines, Inactivated adverse effects, Vaccines, Inactivated immunology, Young Adult, Adjuvants, Immunologic administration & dosage, Adjuvants, Immunologic adverse effects, Influenza A Virus, H5N1 Subtype immunology, Influenza Vaccines adverse effects, Influenza Vaccines immunology, Influenza, Human prevention & control
- Abstract
In this study, we assessed in humans the immunogenicity and safety of one dose (7.5 or 15 μg of hemagglutinin [HA]) of a whole-virion inactivated prepandemic influenza vaccine adjuvanted with aluminum hydroxide. The vaccine strain was made by reverse genetics from the highly pathogenic avian A/Chicken/Astana/6/05 (H5N1) clade 2.2 strain isolated from a dead bird in Kazakhstan. The humoral immune response was evaluated after a single vaccination by hemagglutination inhibition (HI) and microneutralization (MN) assays. The vaccine was safe and immunogenic, inducing seroconversion in 55% of the evaluated patients, with a geometric mean titer (GMT) of 17.1 and a geometric mean increase (GMI) of 3.42 after a dose of 7.5 μg in the HI test against the vaccine strain. The rate of seroconversion increased up to 70% when the dose of 15 μg was used. The percentages of individuals achieving anti-HA titers of ≥1:40 were 52.5% and 57.5% for the 7.5- and 15-μg dose groups, respectively. Similar results were obtained when antibodies were analyzed in an MN test. Substantial cross-neutralization titers (seroconversion in 35% and 52.5% of subjects in the two dose groups, respectively) were detected against heterologous clade 1 strain NIBRG14 (H5N1). Thus, one dose of this whole-virion prepandemic vaccine adjuvanted with aluminum has the potential to be effective against H5N1 viruses of different clades.
- Published
- 2013
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24. [Intranasal co-administration of recombinant streptococcus group B polypeptides and influenza deltaNS1 vaccine].
- Author
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Shurygina AP, Leont'eva GF, Grabovskaia KB, Gupalova TV, Koroleva IV, Kramskaia TA, Kiselev OI, Egorov AIu, and Suvorov AN
- Subjects
- Administration, Intranasal, Animals, Antibodies, Bacterial blood, Antibodies, Viral blood, Cross Protection, Female, Influenza A Virus, H1N1 Subtype genetics, Influenza Vaccines administration & dosage, Influenza Vaccines genetics, Mice, Mice, Inbred BALB C, Orthomyxoviridae Infections immunology, Orthomyxoviridae Infections virology, Peptides genetics, Peptides immunology, Recombinant Proteins administration & dosage, Recombinant Proteins genetics, Recombinant Proteins immunology, Streptococcal Infections immunology, Streptococcal Infections microbiology, Streptococcal Vaccines administration & dosage, Streptococcal Vaccines genetics, Vaccination, Vaccines, Synthetic, Viral Nonstructural Proteins deficiency, Viral Nonstructural Proteins genetics, Antibodies, Bacterial immunology, Antibodies, Viral immunology, Influenza A Virus, H1N1 Subtype immunology, Influenza Vaccines immunology, Orthomyxoviridae Infections prevention & control, Streptococcal Infections prevention & control, Streptococcal Vaccines immunology
- Abstract
In the present work, the immunoadjuvant properties of the influenza deltaNS1 vaccine virus after intranasal administration in combination with recombinant GBS polypeptides was tested in mice. According to our data, co-administration of recombinant GBS polypeptides and influenza deltaNS1 vaccine resulted in the increase in the immunogenicity and protective efficacy of bacterial proteins. Combined vaccination with the GBS polypeptides and influenza deltaNS1 vaccine has a potential to be used not only for prophylaxis infections caused by SGB, but also for prevention of the bacterial complications of influenza.
- Published
- 2013
25. Transmission studies resume for avian flu.
- Author
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Fouchier RA, García-Sastre A, Kawaoka Y, Barclay WS, Bouvier NM, Brown IH, Capua I, Chen H, Compans RW, Couch RB, Cox NJ, Doherty PC, Donis RO, Feldmann H, Guan Y, Katz JM, Kiselev OI, Klenk HD, Kobinger G, Liu J, Liu X, Lowen A, Mettenleiter TC, Osterhaus AD, Palese P, Peiris JS, Perez DR, Richt JA, Schultz-Cherry S, Steel J, Subbarao K, Swayne DE, Takimoto T, Tashiro M, Taubenberger JK, Thomas PG, Tripp RA, Tumpey TM, Webby RJ, and Webster RG
- Subjects
- Animals, Birds, Humans, Biomedical Research trends, Influenza A Virus, H5N1 Subtype, Influenza in Birds transmission, Influenza in Birds virology, Influenza, Human transmission, Influenza, Human virology
- Published
- 2013
- Full Text
- View/download PDF
26. A molecular assembly system for presentation of antigens on the surface of HBc virus-like particles.
- Author
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Blokhina EA, Kuprianov VV, Stepanova LA, Tsybalova LM, Kiselev OI, Ravin NV, and Skryabin KG
- Subjects
- Amino Acid Sequence, Animals, Epitopes immunology, Hepatitis B Core Antigens immunology, Hepatitis B Core Antigens metabolism, Hepatitis B virus immunology, Hepatitis B virus metabolism, Immunization, Influenza Vaccines administration & dosage, Influenza Vaccines genetics, Mice, Mice, Inbred BALB C, Molecular Sequence Data, Orthomyxoviridae Infections immunology, Orthomyxoviridae Infections mortality, Orthomyxoviridae Infections prevention & control, Peptides genetics, Peptides immunology, Recombinant Fusion Proteins immunology, Viral Matrix Proteins genetics, Viral Matrix Proteins immunology, Viral Matrix Proteins metabolism, Virion immunology, Virion metabolism, Antigen Presentation genetics, Hepatitis B Core Antigens genetics, Influenza Vaccines immunology, Viral Matrix Proteins chemistry, Virion genetics
- Abstract
Hepatitis B virus-like particles, icosahedral structures formed by multiple core protein dimers, are promising immune-enhancing vaccine carriers for foreign antigens. Insertions into the surface-exposed immunodominant loop are especially immunogenic. However, the need to conserve the particulate structure to ensure high immunogenicity imposes restraints on the nature of the heterologous sequence that can be inserted. We propose a new approach to constructing HBc particles linked to the target epitopes that relies on non-covalent interactions between the epitope and pre-assembled unmodified HBc particles. Interaction was enabled by fusion of the epitope to the GSLLGRMKGA peptide, binding to the spike tips. This peptide may be used as a "binding tag" allowing in vitro construction of HBc particles carrying the target peptide. Such virus-like particles carrying multiple copies of the extracellular domain of the M2 protein of different influenza strains appeared to be highly immunogenic and protected immunised mice against a lethal influenza challenge., (Copyright © 2012 Elsevier Inc. All rights reserved.)
- Published
- 2013
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27. Structural Features of the Peptide Homologous to 6-25 Fragment of Influenza A PB1 Protein.
- Author
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Egorov VV, Matusevich OV, Shaldzhyan AA, Skvortsov AN, Zabrodskaya YA, Garmay YP, Landa SB, Lebedev DV, Zarubayev VV, Sirotkin AK, Vasin AV, and Kiselev OI
- Abstract
A mirror-symmetry motif was discovered in the N-terminus of the influenza virus PB1 protein. Structure of peptide comprised of the corresponding part of PB1 (amino acid residues 6-25) was investigated by circular dichroism and in silico modeling. We found that peptide PB1 (6-25) in solution assumes beta-hairpin conformation. A truncated peptide PB1 (6-13), containing only half of the mirror-symmetry motif, appeared to stabilize the beta-structure of the original peptide and, at high concentrations, was capable of reacting with peptide to form insoluble aggregates in vitro. Ability of PB1 (6-13) peptide to interact with the N-terminal domain of PB1 protein makes it a potential antiviral agent that inhibits PA-PB1 complex formation by affecting PB1 N-terminus structure.
- Published
- 2013
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28. The use of transient expression systems for the rapid production of virus-like particles in plants.
- Author
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Thuenemann EC, Lenzi P, Love AJ, Taliansky M, Bécares M, Zuñiga S, Enjuanes L, Zahmanova GG, Minkov IN, Matić S, Noris E, Meyers A, Hattingh A, Rybicki EP, Kiselev OI, Ravin NV, Eldarov MA, Skryabin KG, and Lomonossoff GP
- Subjects
- Animals, Antigens, Viral immunology, Bioreactors, Humans, Time Factors, Vaccines, Virus-Like Particle economics, Vaccines, Virus-Like Particle immunology, Viral Vaccines economics, Viral Vaccines immunology, Plant Proteins metabolism, Vaccines, Virus-Like Particle biosynthesis, Viral Proteins metabolism
- Abstract
Advances in transient expression technologies have allowed the production of milligram quantities of proteins within a matter of days using only small amounts (tens of grams) of plant tissue. Among the proteins that have been produced using this approach are the structural proteins of viruses which are capable of forming virus-like particles (VLPs). As such particulate structures are potent stimulators of the immune system, they are excellent vaccine candidates both in their own right and as carriers of additional immunogenic sequences. VLPs of varying complexity derived from a variety of animal viruses have been successfully transiently expressed in plants and their immunological properties assessed. Generally, the plant-produced VLPs were found to have the expected antigenicity and immunogenicity. In several cases, including an M2e-based influenza vaccine candidate, the plant-expressed VLPs have been shown to be capable of stimulating protective immunity. These findings raise the prospect that low-cost plant-produced vaccines could be developed for both veterinary and human use.
- Published
- 2013
- Full Text
- View/download PDF
29. [Deitiforine, an antiinfluenza chemotherapeutic].
- Author
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Tandura SN, Zarubaev VV, Anfimov PM, and Kiselev OI
- Subjects
- Animals, Cell Culture Techniques, Chick Embryo, Humans, Organic Chemicals pharmacology, Antiviral Agents pharmacology, Drug Resistance, Viral drug effects, Influenza A virus, Influenza, Human drug therapy
- Abstract
The problem of prophylaxis and therapy of influenza infections remains one of the priority goals for medical science and practical health care. The review includes the discussion of antiviral activity of Deitiforine, a Russian chemotherapeutic. The data on the toxicity and the specific activity spectrum in cell cultures, chicken embryos and laboratory animals are presented. The problem of the influenza viruses resistance to cage compounds and in particular to rimantadine and Deitiforine is also discussed.
- Published
- 2013
30. Immunogenicity and protective efficacy of candidate universal influenza A nanovaccines produced in plants by Tobacco mosaic virus-based vectors.
- Author
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Petukhova NV, Gasanova TV, Stepanova LA, Rusova OA, Potapchuk MV, Korotkov AV, Skurat EV, Tsybalova LM, Kiselev OI, Ivanov PA, and Atabekov JG
- Subjects
- Animals, Dogs, Epitopes, Female, Humans, Immunoglobulin G immunology, Influenza A Virus, H1N1 Subtype immunology, Influenza Vaccines administration & dosage, Lethal Dose 50, Madin Darby Canine Kidney Cells, Mice, Mice, Inbred BALB C, Microscopy, Electron methods, Nanoparticles, Orthomyxoviridae Infections prevention & control, Survival Rate, Nicotiana virology, Viral Matrix Proteins genetics, Genetic Vectors, Influenza Vaccines immunology, Tobacco Mosaic Virus genetics, Viral Matrix Proteins immunology
- Abstract
A new approach for super-expression of the influenza virus epitope M2e in plants has been developed on the basis of a recombinant Tobacco mosaic virus (TMV, strain U1) genome designed for Agrobacterium-mediated delivery into the plant cell nucleus. The TMV coat protein (CP) served as a carrier and three versions of the M2e sequence were inserted into the surface loop between amino acid residues 155 and 156. Cysteine residues in the heterologous peptide were thought likely to impede efficient assembly of chimeric particles. Therefore, viral vectors TMV-M2e-ala and TMV-M2e-ser were constructed in which cysteine codons 17 and 19 of the M2e epitope were substituted by codons for serine or alanine. Agroinfiltration experiments proved that the chimeric viruses were capable of systemically infecting Nicotiana benthamiana plants. Antisera raised against TMV-M2e-ala virions appear to contain far more antibodies specific to influenza virus M2e than those specific to TMV carrier particle (ratio 5:1). Immunogold electron microscopy showed that the 2-epitopes were uniformly distributed and tightly packed on the surface of the chimeric TMV virions. Apparently, the majority of the TMV CP-specific epitopes in the chimeric TMV-M2e particles are hidden from the immune system by the M2e epitopes exposed on the particle surface. The profile of IgG subclasses after immunization of mice with TMV-M2e-ser and TMV-M2e-ala was evaluated. Immunization with TMV-M2e-ala induced a significant difference between the levels of IgG1 and IgG2a (IgG1/IgG2a=3.2). Mice immunized with the chimeric viruses were resistant to five lethal doses (LD50) of the homologous influenza virus strain, A/PR/8/34 (H1N1) and TMV-M2e-ala also gave partial protection (5LD50, 70% of survival rate) against a heterologous strain influenza A/California/04/2009 (H1N1) (4 amino acid changes in M2e). These results indicate that a new generation candidate universal nanovaccine against influenza based on a recombinant TMV construct has been obtained.
- Published
- 2013
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31. Anti-viral activity of (-)- and (+)-usnic acids and their derivatives against influenza virus A(H1N1)2009.
- Author
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Sokolov DN, Zarubaev VV, Shtro AA, Polovinka MP, Luzina OA, Komarova NI, Salakhutdinov NF, and Kiselev OI
- Subjects
- Animals, Anti-Inflammatory Agents chemical synthesis, Anti-Inflammatory Agents chemistry, Anti-Inflammatory Agents pharmacology, Antiviral Agents chemical synthesis, Benzofurans chemical synthesis, Benzofurans toxicity, Cell Line, Cell Survival drug effects, Dogs, Humans, Macrophages drug effects, Madin Darby Canine Kidney Cells, Mice, Nitric Oxide Synthase Type II metabolism, Stereoisomerism, Structure-Activity Relationship, Transcription Factor RelA metabolism, Tumor Necrosis Factor-alpha metabolism, Antiviral Agents chemistry, Antiviral Agents pharmacology, Benzofurans chemistry, Influenza A Virus, H1N1 Subtype drug effects
- Abstract
Influenza is a widespread respiratory infection. Every year it causes epidemics, quickly spreading from country to country, or even pandemics, involving a significant part of the human population of the earth. Being a highly variable infection, influenza easy accumulates the resistance mutations to many antivirals. Usnic acid, a dibenzofuran originally isolated from lichens belongs to the secondary metabolites and has a broad spectrum of biological activity. In humans, it can act as an anti-inflammatory, antimitotic, antineoplasic, antibacterial, and antimycotic agent. In this work we studied for the first time the antiviral activity of usnic acid and its derivatives against the pandemic influenza virus A(H1N1)pdm09. A total of 26 compounds representing (+) and (-) isomers of usnic acid and their derivates were tested for cytotoxicity and anti-viral activity in MDCK cells by microtetrazolium test and virus yield assay, respectively. Based on the results obtained, 50% cytotoxic dose (CTD(50)) and 50% effective dose (ED(50)) and selectivity index (SI) were calculated for each compound. Eleven of them were found to have SI higher than 10 (highest value 37.3). Absolute configuration was shown to have critical significance for the anti-viral activity. With minor exceptions, in the pair of enantiomers, (-)-usnic acid was more active comparing to (+)-isomer, but its biological activity was reversed after the usnic acid was chemically modified. Based on the obtained results, derivatives of usnic acid should be considered as prospective compounds for further optimization as anti-influenza substances., (Copyright © 2012 Elsevier Ltd. All rights reserved.)
- Published
- 2012
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32. [Development of novel drugs against influenza virus based on synthetic and natural compounds].
- Author
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Zarubaev VV, Anfimov PM, Shtro AA, Garshinina AV, Meleshkina IA, Karpinskaia LA, Kozeletskaia KN, and Kiselev OI
- Subjects
- Antioxidants therapeutic use, Humans, Influenza, Human virology, Orthomyxoviridae drug effects, Adamantane analogs & derivatives, Adamantane chemical synthesis, Adamantane therapeutic use, Antiviral Agents chemistry, Antiviral Agents therapeutic use, Drug Discovery, Influenza, Human drug therapy
- Abstract
Recent progress of the laboratory in the area of the search and development of novel remedies for prophylaxis and treatment of influenza is reviewed in this work. The data of the study of the anti-viral activity of compounds from the chemical groups of azolo-adamantanes, triterpenes, derivatives of benzimidazole, usnic acid, and other heterocyclic substances are presented. The protective properties of the plant antioxidants at lethal influenza infection of animals are discussed. High virus-inhibiting activity of natural polysaccharides and their complexes with silver ions is shown against influenza virus. The data presented allow listed groups of compounds to be suggested as promising candidates for further development of anti-influenza drugs.
- Published
- 2012
33. [Immunosuppression at pregnancy and flu].
- Author
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Kiselev OI
- Subjects
- Female, Humans, Influenza A Virus, H1N1 Subtype immunology, Influenza A Virus, H1N1 Subtype pathogenicity, Pregnancy, Receptors, Antigen, T-Cell immunology, T-Lymphocytes immunology, T-Lymphocytes metabolism, Immune Tolerance immunology, Influenza A Virus, H5N1 Subtype immunology, Influenza A Virus, H5N1 Subtype metabolism, Influenza A Virus, H5N1 Subtype pathogenicity, Influenza, Human complications, Influenza, Human immunology, Pregnancy Complications, Infectious
- Abstract
The hypothesis of the development of immunosuppression at the pregnancy is put forward in this review. This hypothesis is explaining the complicated character of the pandemic H1N1pdm09 infection among pregnant women. Physiological immunosuppression at pregnancy is based on suppression of various T-lymphocyte subpopulations using a unique mechanism: dimerization blockade of TcR receptors by special domains known as immunosuppressive sequences. These protein sequences were recognized in placentary Syntcytins and in proteins of pathogenic viruses, including Ebola virus and retroviruses. Among H5N1 and H1N1pdm09 influenza virus homologs of immunosuppressive domains are revealed and identified as the pathogenicity factors. Synthetic peptides, homologs of these domains, suppress an antigen-induced T-lymphocyte proliferation by inhibiting of TcR and NKG2D receptor activation. Integration of immunosuppressive domains into T-lymphocyte membrane leads to electrostatic pair formation and dimerization through interaction with transmembrane domains of TcR and NKG2D receptors.
- Published
- 2012
34. [Genetic diversity and molecular evolution of the influenza A viruses in Russia during 2006-2012].
- Author
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Grudinin MP, Komissarov AB, Pisareva MM, Stukova MA, Buzitskaia ZhV, Paiankova AA, Elpaeva EA, Zadonskaia AV, Ivanov IuV, and Kiselev OI
- Subjects
- Evolution, Molecular, Genetic Drift, Genetic Variation, Humans, Russia, Hemagglutinin Glycoproteins, Influenza Virus classification, Hemagglutinin Glycoproteins, Influenza Virus genetics, Influenza A virus classification, Influenza A virus genetics, Influenza, Human classification, Influenza, Human genetics, Influenza, Human virology, Phylogeny
- Abstract
The results of molecular genetic analysis of more than 280 strains of influenza A virus subtypes H1N1 and H3N2 circulating in Russia in 2006-2012 are presented. The genetic changes underlying the evolution of the virus strains and sensitivity to antiviral drugs were analyzed. Significant changes in the genetic structure of influenza A viruses circulating in the Russian Federation and their phylogenetic affiliation are shown to occur within the studied period. The studies identifying codons under the positive selection in silico in the genes encoding surface proteins of the influenza virus were demonstrated to be efficient for the analysis of the antigenic drift and direction of evolutionary variability of the influenza viruses.
- Published
- 2012
35. [Characterization of cold-adapted influenza strain A/HongKong/1/68/162/35 as a potential donor of attenuation and high reproduction].
- Author
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Tsybalova LM, Gorev NE, Potapchuk MV, Repko IA, Korotkov AV, Sergeeva MV, Komissarov AB, Pisareva MM, Kuznetsov VV, Grudinin MP, and Kiselev OI
- Subjects
- Cold Temperature, Humans, Mutation, Reassortant Viruses genetics, Temperature, Viral Proteins genetics, Influenza A Virus, H3N2 Subtype genetics, Influenza A Virus, H3N2 Subtype immunology, Influenza Vaccines genetics, Influenza, Human genetics, Influenza, Human prevention & control, Influenza, Human virology, Vaccines, Attenuated
- Abstract
Live and inactivated vaccines are currently produced using virus reassortants originating from various gene donors of internal proteins. Based on the pandemic virus A/Hong Kong/1/68 (H3N2), a cold-adapted thermo-sensitive strain A/Hong Kong/1/68/162/35 was generated. It is distinguished for its high reproductive capacity (9-9.5 lg EID50), and hemagglutinating activity (1:1024-1:2048). The strain has ts and ca phenotype: reproductive capacity at t = 39 degrees C is 1.0 lg EID50; at t = 26 degrees C, 8.5 lg EID50. A total of 16 mutations have emerged from comprehensive sequencing of the virus genome. Among them 10 mutations were located in the genes of polymerase complex and NP, with respective amino-acid substitutions. The stability of strain characteristics, such as attenuation to humans and high reproductive capacity, were confirmed by repeated sequencing of the genome after tenfold passing of the virus in chicken embryos. Reassortants of the strain A/Hong Kong/1/68/162/35 with the wild-type viruses have inherited useful features of donor virus.
- Published
- 2012
36. [A new antiviral drug Triazavirin: results of phase II clinical trial].
- Author
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Kiselev OI, Deeva EG, Mel'nikova TI, Kozeletskaia KN, Kiselev AS, Rusinov VL, Charushin VN, and Chupakhin ON
- Subjects
- Adolescent, Adult, Antiviral Agents adverse effects, Azoles adverse effects, Female, Humans, Influenza A virus isolation & purification, Influenza B virus isolation & purification, Kaplan-Meier Estimate, Male, Middle Aged, Triazines adverse effects, Triazoles, Antiviral Agents administration & dosage, Azoles administration & dosage, Influenza, Human drug therapy, Influenza, Human virology, Triazines administration & dosage
- Abstract
The results of the clinical trial testing the efficacy of a new anti-influenza drug Triazavirin are presented in this work. The data of the trial were gathered during the 2010 influenza season. The treatment with oral Triazavirin significantly reduced the duration of the main clinical symptoms of influenza (intoxication, fever, respiratory symptoms), decreased the incidence of the influenza-related complications and the use of symptomatic drugs. The re-isolation rate of the influenza A and B viruses was significantly lower in the patients who were using Triazavirin. The analysis of the clinical data showed that the optimal prescribed dosage was 250 mg 3 times a day.
- Published
- 2012
37. Recombinant influenza vaccines.
- Author
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Sedova ES, Shcherbinin DN, Migunov AI, Smirnov IuA, Logunov DIu, Shmarov MM, Tsybalova LM, Naroditskiĭ BS, Kiselev OI, and Gintsburg AL
- Abstract
This review covers the problems encountered in the construction and production of new recombinant influenza vaccines. New approaches to the development of influenza vaccines are investigated; they include reverse genetics methods, production of virus-like particles, and DNA- and viral vector-based vaccines. Such approaches as the delivery of foreign genes by DNA- and viral vector-based vaccines can preserve the native structure of antigens. Adenoviral vectors are a promising gene-delivery platform for a variety of genetic vaccines. Adenoviruses can efficiently penetrate the human organism through mucosal epithelium, thus providing long-term antigen persistence and induction of the innate immune response. This review provides an overview of the practicability of the production of new recombinant influenza cross-protective vaccines on the basis of adenoviral vectors expressing hemagglutinin genes of different influenza strains.
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- 2012
38. [Technological approaches to development of whole-virion inactivated vaccine from recombinant strain against A/H5N1 influenza in the Republic of Kazakhstan].
- Author
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Kydyrbaev ZhK, Mamadaliev SM, Asanzhanova NN, Tabynov KK, Ryskel'dinova ShZh, Cherviakova OV, Sandybaev NT, Khaĭrullin BM, and Kiselev OI
- Subjects
- Adjuvants, Immunologic, Aluminum Hydroxide immunology, Animals, Antibodies, Viral blood, Chick Embryo, Formaldehyde chemistry, Hemagglutination, Humans, Immunization, Influenza Vaccines biosynthesis, Influenza, Human immunology, Influenza, Human virology, Kazakhstan, Mice, Orthomyxoviridae Infections immunology, Orthomyxoviridae Infections virology, Vaccines, Inactivated, Vaccines, Synthetic, Virion immunology, Virion isolation & purification, Antibodies, Viral immunology, Influenza A Virus, H5N1 Subtype immunology, Influenza Vaccines immunology, Influenza, Human prevention & control, Orthomyxoviridae Infections prevention & control
- Abstract
Aim: Development of technological stages of preparation of experimental influenza whole-virion inactivated adsorbed vaccine based on recombinant influenza virus strains NIBRG-14 and A/Astana/RG/6:2/2009., Materials and Methods: 2 recombinant vaccines influenza strains were used in the study--NIBRG-14 and A/Astana/RG/6:2/2009. Purification of native virus-containing allantoic fluid was performed by ion-exchange chromatography. The virus was inactivated by formaldehyde. Merthiolate at concentration of 0.1 mg/ml was added to the vaccine as a preserving substance. Aluminium hydroxide was used as an adjuvant. Harmlessness and immunogenicity (HI) of the constructed preparation are determining., Results: Virus-containing materials from recombinant strains with biological activity of 8.5 - 9.0 lg EID50/cm3 and hemagglutination activity of 1:256 - 1:1024 in chicken embryos were obtained. Optimal inactivation regimen of non-purified suspensions by formaldehyde was established and combined scheme of purification and concentration of influenza virus was selected that provide harmlessness and immunogenicity of experimental samples of inactivated vaccines against highly pathogenic influenza A/H5N1 in experiments in mice., Conclusion: The data obtained on quality parameters of intermediate products and final vaccine give evidence on their compliance with normative parameters for whole-virion influenza purified vaccine.
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- 2012
39. [Molecular-biological properties of the rubella virus strains isolated in St. Petersburg].
- Author
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Buzitskaia ZhV, Sirotkin AK, Gudkova TM, Prochukhanova AP, Karpov AV, Tsybalova LM, and Kiselev OI
- Subjects
- Adolescent, Adult, Animals, Cell Line, Disease Outbreaks, Epithelial Cells pathology, Hospitals, Military, Humans, Male, Nasopharynx virology, Phylogeny, Polymerase Chain Reaction, Rabbits, Rubella epidemiology, Rubella virus classification, Rubella virus isolation & purification, Russia epidemiology, Viral Envelope Proteins metabolism, Young Adult, Epithelial Cells virology, Nasopharynx pathology, Rubella diagnosis, Rubella virus genetics, Viral Envelope Proteins genetics
- Abstract
In the surveillance of rubella in the northwest region of Russia samples of nasopharyngeal swabs from 37 patients with rubella, which were treated in the 442nd district military hospital named after Z.P. Solovyov in autumn 2007 were screened for the rubella virus using RK-13 cell line, 22 strains of rubella virus were isolated. Gene sequencing of E1 region of rubella virus isolates was carried out. Rubella virus strains isolated in St. Petersburg during the 2007 outbreak belonged to rubella virus genotype 1E. The morphogenesis of RK-13 cells with formation of replication complexes and enveloped virions of rubella virus was shown.
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- 2012
40. [Effect of Ingavirin on the ultrastructure of the morphogenesis of adenovirus infection in vivo].
- Author
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Zarubaev VV, Slita AV, Sirotkin AK, Beliavskaia SV, Nebol'sin VE, Reĭkhart DV, and Kiselev OI
- Subjects
- Adenoviruses, Human drug effects, Adenoviruses, Human genetics, Animals, Caproates, Cricetinae, Humans, Mesocricetus, Microscopy, Electron, Adenoviridae Infections drug therapy, Amides administration & dosage, Dicarboxylic Acids administration & dosage, Hepatitis, Animal drug therapy, Hepatitis, Animal virology, Hepatocytes drug effects, Hepatocytes ultrastructure, Imidazoles administration & dosage, Liver drug effects, Liver ultrastructure
- Abstract
The goal of this study was to evaluate the effect of Ingavirin on the morphological features of the foci of adenovirus hepatitis in Syrian hamsters by electron microscopy. The use of the drug was shown to cause a substantial reduction in the rate of destructive processes and inflammatory reactions in the liver, by normalizing its structure at the levels of both tissue and individual hepatocytes. After administration of Ingavirin, the morphogenesis of adenovirus infection in the infected hepatocytes did not differ from that in the controls; however, the infected cells were fewer. The proportion of morphologically inadequate virions in the presence of Ingavirin increased from 35 to 46%. The findings suggest that Ingavirin is an effective drug that has antiviral, anti-inflammatory, and cytoprotective activities in the focus of adenovirus tissue involvement.
- Published
- 2012
41. [Effect of different water-soluble forms of the fullerene C60 on the metabolic activity and ultra-structure of cells in culture].
- Author
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Eropkina EM, Il'inskaia EV, Litasova EV, Eropkin MIu, Piotrovskiĭ LB, Dumpis MA, and Kiselev OI
- Subjects
- Animals, Cell Line, Fullerenes chemistry, Macaca mulatta, Microscopy, Electron, Mitochondria radiation effects, Mitochondria ultrastructure, Povidone metabolism, Povidone toxicity, Solubility, Ultraviolet Rays, gamma-Cyclodextrins metabolism, gamma-Cyclodextrins toxicity, Fullerenes toxicity, Mitochondria drug effects
- Abstract
In view of contradictory data on the toxicity of fullerenes for live organisms we studied the effect of water-soluble complexes of C60 with N-polyvivyl-pirrolidone (C60/PVP) and gamma-cyclodextrine (C60/gamma-CD) on MA-104 cells in culture. Both complexes proved to be non-toxic for cultured cells in the dark in wide range of concentrations. Both complexes provoke changes of cellular ultra-structure which reflect the enhancement of metabolic activity. At the same time only the exposition with the complex C60/PVP leads to the essential growth of number and size of mitochondria. However, the effect of two studied water-soluble forms of C60 under intensive UV-irradiation of cells proved to be opposite: C60/PVP had a cyto-protective action while C60/gamma-CD caused a significant growth of photo-toxicity. Possible reasons of the differences in the action of different forms of C60 on living organisms are discussed.
- Published
- 2012
42. [Ingavirin treatment of experimental parainfluenza pneumonia in Syrian hamsters].
- Author
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Zarubaev VV, Garshinina AV, Kalinina NA, Beliaevskaia SV, Nebol'sin VE, Kiselev OI, and Reĭkhart DV
- Subjects
- Animals, Animals, Newborn, Caproates, Child, Preschool, Cricetinae, Humans, Infant, Lung pathology, Lung virology, Mesocricetus, Parainfluenza Virus 3, Human drug effects, Parainfluenza Virus 3, Human isolation & purification, Paramyxoviridae Infections pathology, Pneumonia, Viral pathology, Ribavirin pharmacology, Viral Load, Amides therapeutic use, Dicarboxylic Acids therapeutic use, Imidazoles therapeutic use, Paramyxoviridae Infections drug therapy, Pneumonia, Viral drug therapy
- Abstract
Parainfluenza viruses affect the upper respiratory tract in all age group patients, in children aged 6 months to 3 years in particular. The most urgent task is to design drugs to treat parainfluenza. This investigation studied the antiviral activity of Ingavirin (2-(imidazole-4-yl) ethanamide of pentandioic-1,5 acid) on a model of parainfluenza infection in Syrian hamsters. The drug was shown to restrict the infectious process in animal lung tissue. This restriction manifested itself as reductions in the infectious titer of parainfluenza virus in the lung tissue, in the degree of pulmonary edema and tissue cell infiltration, and in virus-specific lesion of bronchial epithelial cells. The in vitro experiments demonstrated the ability of Ingavirin to diminish the infective activity of viral descendants. The finding allows one to consider Ingavirin to be a promising antiviral agent that is active against parainfluenza infection in vivo.
- Published
- 2012
43. [Prevention of tuberculosis: current approaches to development of vaccines].
- Author
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Stukova MA, Zabolotnykh NV, Vinogradova TI, Gergert VIa, Apt AS, Kaprel'iants AS, Erokhin VV, Iablonskiĭ PK, and Kiselev OI
- Subjects
- Animals, Humans, Vaccines, Attenuated, Tuberculosis prevention & control, Tuberculosis Vaccines pharmacology, Vaccination trends
- Abstract
This review is focused on recent advances in development of new vaccines for the prevention of tuberculosis. The main reasons for lack of BCG vaccine efficacy in different populations and geographic regions are presented. Design of new vaccines based on live modified strains of Mycobacterium bovis BCG, attenuated strains of Mycobacterium tuberculosis, recombinant proteins and viral vectors is considered in the specific examples. The usage of the heterologous "prime-boost" vaccination strategy against tuberculosis is discussed.
- Published
- 2012
44. Plant-produced recombinant influenza vaccine based on virus-like HBc particles carrying an extracellular domain of M2 protein.
- Author
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Ravin NV, Kotlyarov RY, Mardanova ES, Kuprianov VV, Migunov AI, Stepanova LA, Tsybalova LM, Kiselev OI, and Skryabin KG
- Subjects
- Amino Acid Sequence, Animals, Genetic Vectors, Hepatitis B Core Antigens genetics, Humans, Immunoglobulin G metabolism, Influenza Vaccines genetics, Influenza Vaccines immunology, Mice, Molecular Sequence Data, Nanotechnology, Particle Size, Potexvirus genetics, Recombinant Fusion Proteins genetics, Recombinant Fusion Proteins immunology, Recombinant Fusion Proteins metabolism, Vaccines, Synthetic metabolism, Viral Matrix Proteins genetics, Viral Matrix Proteins immunology, Hepatitis B Core Antigens metabolism, Influenza Vaccines metabolism, Influenza, Human prevention & control, Nicotiana metabolism, Viral Matrix Proteins metabolism
- Abstract
Conventional influenza vaccines are based on a virus obtained in chicken embryos or its components. The high variability of the surface proteins of influenza virus, hemagglutinin and neuraminidase, requires strain-specific vaccines matching the antigenic specificity of newly emerging virus strains to be developed. A recombinant vaccine based on a highly conservative influenza virus protein M2 fused to a nanosized carrier particle can be an attractive alternative to traditional vaccines. We have constructed a recombinant viral vector based on potato X virus that provides for expression in the Nicotiana benthamiana plants of a hybrid protein M2eHBc consisting of an extracellular domain of influenza virus M2 protein (M2e) fused to hepatitis B core antigen (HBc). This vector was introduced into plant cells by infiltrating leaves with agrobacteria carrying the viral vector. The hybrid protein M2eHBc was synthesized in the infected N. benthamiana plants in an amount reaching 1-2% of the total soluble protein and formed virus-like particles with the M2e peptide presented on the surface. Methods of isolation and purification of M2eHBc particles from plant producers were elaborated. Experiments on mice have shown a high immunogenicity of the plant-produced M2eHBc particles and their protective effect against lethal influenza challenge. The developed transient expression system can be used for production of M2e-based candidate influenza vaccine in plants.
- Published
- 2012
- Full Text
- View/download PDF
45. [Universal influenza vaccines: developments, prospects for use].
- Author
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Tsybalova LM and Kiselev OI
- Subjects
- Amino Acid Sequence, Antigens, Viral genetics, Antigens, Viral immunology, Conserved Sequence, Epitopes genetics, Epitopes immunology, Hemagglutinins genetics, Hemagglutinins immunology, Humans, Influenza A virus genetics, Influenza Vaccines genetics, Influenza, Human virology, Molecular Sequence Data, Neuraminidase genetics, Neuraminidase immunology, Vaccines, Synthetic, Viral Matrix Proteins genetics, Viral Matrix Proteins immunology, Viral Proteins genetics, Viral Proteins immunology, Influenza A virus immunology, Influenza Vaccines immunology, Influenza, Human prevention & control
- Abstract
The review analyzes the developments of genetic engineering influenza vaccines based on the conservative epitopes of viral surface proteins, such as hemagglutinin, neuraminidase, ectodomain of matrix protein M2. It estimates the capacity of the vaccines to induce an immune response to a wide variety of influenza viruses, considers ways to increase the immunogenicity and protective properties of the vaccines, based on the conservative epitopes of viral surface proteins, and prospects for their use to prevent influenza.
- Published
- 2012
46. [Prognostic value of human papilloma virus DNA test in patients surgically treated for squamous cell cervical cancer].
- Author
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Bakhidze EV, Lavrinovich OE, Chepik OF, and Kiselev OI
- Subjects
- Adult, Aged, Alphapapillomavirus genetics, Carcinoma, Squamous Cell secondary, Disease-Free Survival, False Negative Reactions, False Positive Reactions, Female, Humans, Middle Aged, Papillomavirus Infections virology, Polymerase Chain Reaction, Predictive Value of Tests, Prognosis, Sensitivity and Specificity, Uterine Cervical Neoplasms pathology, Vaginal Smears, Alphapapillomavirus isolation & purification, Carcinoma, Squamous Cell surgery, Carcinoma, Squamous Cell virology, DNA, Viral isolation & purification, Papillomavirus Infections complications, Uterine Cervical Neoplasms surgery, Uterine Cervical Neoplasms virology
- Abstract
The human papilloma virus (HPV) DNA test was performed in paraffinized biopsy samples of iliac lymph nodes obtained from 98 patients with cervical cancer receiving therapy in N. N. Petrov Research Institute of Oncology in 2000 to 2007. The data obtained was compared to patients clinical course. The HPV DNA was detected in 29 of 98 patients samples (29,6%), 27 of those patients had metastatic disease. These patients had significantly higher metastasis rate than HPV DNA-negative patients (p < or = 0,05). The following highly oncogenic genotypes of HPV DNA were detected: type 16 in 15 patients (51,72%), type 18 in 4 patients (13,79%), type 31 in 5 patients (17,24%) and type 33 in 5 patients (17,24%). In all the cases the HPV type detected in the lymph nodes corresponded to the one detected in the primary tumor. The relapse-free survival of HPV DNA-positive patients with iliac lymph nodes metastases (N1) was significantly lower than in HPV DNA-negative patients (p < or = 0,05). The iliac lymph nodes HPV DNA detection had 43,6% sensitivity (95% CI: 28/60%) and 79,7% specificity (95% CI: 67/89%) for relapse prediction. The test results had diagnostic value in 65,3% of cases, the test was false-negative in 56,4% and false-positive in 20,3% of cases.
- Published
- 2012
47. Activity of Ingavirin (6-[2-(1H-Imidazol-4-yl)ethylamino]-5-oxo-hexanoic Acid) Against Human Respiratory Viruses in in Vivo Experiments.
- Author
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Zarubaev VV, Garshinina AV, Kalinina NA, Shtro AA, Belyaevskaya SV, Slita AV, Nebolsin VE, and Kiselev OI
- Abstract
Respiratory viral infections constitute the most frequent reason for medical consultations in the World. They can be associated with a wide range of clinical manifestations ranging from self-limited upper respiratory tract infections to more devastating conditions such as pneumonia. In particular, in serious cases influenza A leads to pneumonia, which is particularly fatal in patients with cardiopulmonary diseases, obesity, young children and the elderly. In the present study, we show a protective effect of the low-molecular weight compound Ingavirin (6-[2-(1H-imidazol-4-yl)ethylamino]-5-oxohexanoic acid) against influenza A (H1N1) virus, human parainfluenza virus and human adenovirus infections in animals. Mortality, weight loss, infectious titer of the virus in tissues and tissue morphology were monitored in the experimental groups of animals. The protective action of Ingavirin was observed as a reduction of infectious titer of the virus in the lung tissue, prolongation of the life of the infected animals, normalization of weight dynamics throughout the course of the disease, lowering of mortality of treated animals compared to a placebo control and normalization of tissue structure. In case of influenza virus infection, the protective activity of Ingavirin was similar to that of the reference compound Tamiflu. Based on the results obtained, Ingavirin should be considered as an important part of anti-viral prophylaxis and therapy.
- Published
- 2011
- Full Text
- View/download PDF
48. [Antiviral activity of Ingavirin on an animal model for experimental disseminated adenovirus infection].
- Author
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Zarubaev VV, Slita AV, Beliaevskaia SV, Nebol'sin VE, Kiselev OI, and Reĭkhart DV
- Subjects
- Adenoviridae Infections pathology, Adenoviruses, Human pathogenicity, Amides therapeutic use, Animals, Animals, Newborn, Antiviral Agents therapeutic use, Caproates, Cell Nucleus ultrastructure, Cell Nucleus virology, Cricetinae, Dicarboxylic Acids therapeutic use, Hep G2 Cells, Hepatitis, Viral, Animal drug therapy, Hepatitis, Viral, Animal pathology, Humans, Imidazoles therapeutic use, Mesocricetus, Models, Animal, Pneumonia, Viral drug therapy, Pneumonia, Viral pathology, Virulence drug effects, Virus Replication drug effects, Adenoviridae Infections drug therapy, Adenoviruses, Human drug effects, Amides pharmacology, Antiviral Agents pharmacology, Dicarboxylic Acids pharmacology, Imidazoles pharmacology
- Abstract
Adenoviruses constitute a clinically important family of human pathogens. Due to their wide tissue tropism, adenoviruses are able to induce different diseases from moderate respiratory disorders to fatal outcomes in patients with immunodeficiencies. The authors present the results of a trial of the antiviral activity of the new drug Ingavirin [2-(imidazole-4-yl-ethanamide) pentandioic-1,5 acid] against human adenovirus type 5 on an animal model. Ingavirin is shown to decrease an adenoviral infectious titer in the liver and lung of neonatal Syrian hamsters (by approximately 1 log10 TCID50 as compared to the control) and to reduce the sizes of liver inflammation foci by 2-fold. Furthermore, it also decreases the count of virus-infected cells detectable by morphological analysis. Hepatocytes from Ingavirin-treated animals appear intact unlike strongly vacuolized cells from the animals given placebo. The findings make it possible to regard Ingavirin as a promising agent of the combination therapy of human adenovirus disease.
- Published
- 2011
49. [Comparative study of the differential susceptibility of different cell lines to pandemic H1N1v influenza viruses and avian influenza, swine influenza, and human influenza viruses].
- Author
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Danilenko DM, Smirnova TD, Gudkova TM, Eropkin MIu, and Kiselev OI
- Subjects
- Animals, Apoptosis immunology, Cell Culture Techniques, Cell Line, Tumor, Cell Proliferation, Chick Embryo, Chickens, Chlorocebus aethiops, Disease Susceptibility virology, Dogs, Humans, Swine, Vero Cells, Influenza A Virus, H1N1 Subtype physiology, Orthomyxoviridae Infections virology, Virus Replication
- Abstract
The proliferation characteristics of influenza viruses of different origin were tested in various human and animal cell cultures. Pandemic H1N1v influenza and swine influenza viruses were shown to have a low infectious activity in virtually all the test lines. In spite of this, the replication of this group of viruses may be detected by de novo NP synthesis. These viruses are able to activate programmed cell death. Moreover, a low inoculative virus dose exerts a stimulating effect on cell proliferation in both suspension and monolayer cell lines.
- Published
- 2011
50. [Preclinical studies of live intranasal H5N1 influenza vaccine with the deleted HS1 gene].
- Author
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Romanovskaia-Roman'ko EA, Ferko B, Vyshemirskiĭ OI, Romanova IuR, Krenn B, Muster T, Grudinin MP, Lapin BA, Egorov AIu, and Kiselev OI
- Subjects
- Administration, Intranasal, Animals, Chlorocebus aethiops, Cross Protection immunology, Drug Evaluation, Preclinical, Humans, Influenza A Virus, H5N1 Subtype immunology, Influenza Vaccines genetics, Influenza Vaccines immunology, Influenza, Human genetics, Influenza, Human immunology, Interferons metabolism, Macaca fascicularis, Mice, Orthomyxoviridae Infections genetics, Orthomyxoviridae Infections immunology, Reverse Genetics methods, Vaccines, Attenuated genetics, Vaccines, Attenuated immunology, Vero Cells, Viral Nonstructural Proteins immunology, Influenza A Virus, H5N1 Subtype genetics, Influenza Vaccines therapeutic use, Influenza, Human prevention & control, Orthomyxoviridae Infections prevention & control, Vaccines, Attenuated therapeutic use, Viral Nonstructural Proteins genetics
- Abstract
The paper gives the results of evaluating the efficiency of deINS1 pandemic H5N1 vaccine candidate VN1203delNS1 which was constructed by reverse genetics on the basis of influenza virus strain A/Vietnam/1203/04. The safety, immunogenicity and cross-protection of the vaccine strain against different H5N1 virus clades were demonstrated in mouse and macaque models. The results showed the possibility of designing a new-generation replication-deficient intranasal influenza vaccine, by applying an approach to deleting the NS1 pathogenicity factor, an antagonist of the interferon system.
- Published
- 2011
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