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Nikiforova PK, Bubenov SS, Platonov VB, Kumskov AS, Kononov NN, Kuznetsova TA, Dorofeev SG. Isolation of cubic Si 3P 4 in the form of nanocrystals. Beilstein J Nanotechnol 2023; 14:971-979. [PMID: 37800121 PMCID: PMC10548250 DOI: 10.3762/bjnano.14.80] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 09/12/2023] [Indexed: 10/07/2023]
Abstract
This article describes an approach for synthesizing silicon phosphide nanoparticles with a defective zinc blende structure under mild conditions through thermal annealing of hydrogenated silicon nanoparticles with red phosphorus. The synthesized Si3P4 nanoparticles were analyzed using FTIR, XRD, electron diffraction, EDX, TEM, Raman spectroscopy, X-ray fluorescence spectrometry, and UV-vis spectrophotometry. For the isolated cubic Si3P4 phase, a cell parameter of a = 5.04 Å was determined, and the bandgap was estimated to be equal to 1.25 eV. Because of the nanoscale dimensions of the obtained Si3P4 nanoparticles, the product may exhibit several exceptional properties as a precursor for diffusion doping of wafers and as anode material for Li-ion batteries. A similar method with a hydrogenation step offers the possibility to obtain other compounds, such as silicon selenides, arsenides, and sulfides.
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Affiliation(s)
- Polina K Nikiforova
- Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskie Gory, Moscow, Russia
| | - Sergei S Bubenov
- Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskie Gory, Moscow, Russia
| | - Vadim B Platonov
- Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskie Gory, Moscow, Russia
| | - Andrey S Kumskov
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre «Crystallography and Photonics», Russian Academy of Sciences, 59 Leninskiy prospekt, Moscow, Russia
| | - Nikolay N Kononov
- Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Str., Moscow, Russia
| | - Tatyana A Kuznetsova
- Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskie Gory, Moscow, Russia
| | - Sergey G Dorofeev
- Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskie Gory, Moscow, Russia
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Fisyun IV, Kuznetsova TA, Tkacheva YA, Yakubova EV. Results of Randomized Comparative Efficacy Study of Iron Deficiency Anemia Management in Children with Iron III Hydroxide Polymaltose Complex and Iron Sulfate. Pediatr farmakol 2022. [DOI: 10.15690/pf.v19i4.2441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background. The guidelines on selection between iron preparations, iron sulfate (IS) and iron III hydroxide polymaltose complex (HPC), for iron deficiency anemia (IDA) management in pediatrics are contradictory. Objective. The aim of the study is to compare efficacy and safety of iron (III) HPC and IS for IDA treatment in children. Materials and methods. Randomization of children (aged from 1 month to 18 years) with IDA into 2 therapeutic groups was implemented in 2019-2020. on pediatric districts of children’s city outpatient's clinic: IS dosage of 3 mg/kg/day and iron (III) HPC dosage of 5 mg/kg/day. Hemogram monitoring was performed every 14 days. The efficacy was compared according to the rate of Hb level increase, erythrocytes indices, and serum ferritin (SF) level at the recorded moment of Hb normalization. For the safety — the rate of adverse effects. Results. 65 children with IDA were included in the study and randomized into 2 groups, the median age was 2.3 years (1st; 3rd quartile = 1.1; 4.3). Hb level increase was comparable in both groups (0.34 (0.23; 0.48) g/L/day and 0.24 (0.21; 0.30) g/L/day, р = 0.891). IS is more effective than iron (III) HPC in terms of average red blood cell volume by the time of Hb normalization (83.5 (80.0; 86.7) fl against 80.7 (79.0; 82.0) fl, р = 0.006), and mean cellular hemoglobin content (28.9 (SD = 2.0) pg against 27.4 (SD = 1.8) pg, р = 0.004). The timing of SF levels normalization did not differ. Adverse effects to iron III HPC treatment occurred 5.5 times more frequently than to IS (p = 0.0001). Conclusion. The efficacy of IS and iron III HPC at standard doses is comparable. The advantage in tolerability and recovery of erythrocytic indices justifies the feasibility of using IS preparations in the first line of treatment for children with IDA.
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Affiliation(s)
- Ivan V. Fisyun
- Orel State University named after I.S. Turgenev, Medical Institute
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Kuznetsova TA, Andryukov BG, Polovov SF, Gazha AK. Modern aspects of burn injury immunopathogenesis and immuno-biochemical markers of wound healing (review of literature). Klin Lab Diagn 2022; 67:451-457. [PMID: 36095081 DOI: 10.51620/0869-2084-2022-67-8-451-457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Burns are one of the most common traumatic injuries in the world, representing a global public health problem. Major burns (severe burn injury or burn disease) are one of the most life-threatening injuries. There is a great need to identify and monitor the development of complications (sepsis and septic shock, coagulopathy and DIC) in burned patients. The basis of the pathogenesis of burn injury, as well as any general pathological process, is an inflammatory reaction, ultimately aimed at restoring the structure and function of the damaged tissue. A feature of the inflammatory reaction in burn injury is the scale of alteration of the skin and mucous membranes. The review presents the main aspects of the burn injuries immunopathogenesis and the features of post-burn immune dysfunction, manifested by disorders in the innate and adaptive immunity systems. Attention is focused on the role in the immunopathogenesis of developing systemic and local disorders in burn injury. Also the role are discussed of a minor subpopulations of lymphocytes (Treg-, Th-17-, γδT-cells) in the immunopathogenesis and in the bacterial infection protection. The characteristics of the main immuno-biochemical markers of burn injury (cytokines and growth factors, nitric oxide, matrix metalloproteases, bacteria concentration levels) are present. The prognostic role of these biomarkers in assessing of the severity degree of patients with burn injury and wound healing processes is shown. The review has been compiled using references from major databases such as RSCI, Web of Science, PubMed, Scopus and Google Scholar (up to march 2022). After obtaining all reports from database, the papers were carefully analyzed in order to find data related to the topic of this review (60 references).
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Affiliation(s)
- T A Kuznetsova
- Far Eastern branch of the Federal State Budgetary Institution "State Research and Testing Institute of Military Medicine" State Military Medical University of the Ministry of Defense of the Russian Federation
| | - B G Andryukov
- Far Eastern branch of the Federal State Budgetary Institution "State Research and Testing Institute of Military Medicine" State Military Medical University of the Ministry of Defense of the Russian Federation
| | - S F Polovov
- Far Eastern branch of the Federal State Budgetary Institution "State Research and Testing Institute of Military Medicine" State Military Medical University of the Ministry of Defense of the Russian Federation
| | - A K Gazha
- Far Eastern branch of the Federal State Budgetary Institution "State Research and Testing Institute of Military Medicine" State Military Medical University of the Ministry of Defense of the Russian Federation
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Kuznetsova TA, Andryukov BG, Besednova NN. Modern Aspects of Burn Injury Immunopathogenesis and Prognostic Immunobiochemical Markers (Mini-Review). BioTech 2022; 11:biotech11020018. [PMID: 35822791 PMCID: PMC9264396 DOI: 10.3390/biotech11020018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 05/21/2022] [Accepted: 05/25/2022] [Indexed: 11/18/2022] Open
Abstract
Burn injuries are among the most common peacetime injuries, with mortality ranging from 2.3% to 3.6%. At the same time, 85–90% of patients with burns are people of working age and children. Burn injury leads to metabolic disorders and systemic inflammatory response, inefficient energy consumption, and other physiological changes that can lead to dysfunction of organs and systems. The most formidable complication of burn injuries is sepsis mediated by multiple organ failure, the most common cause of poor prognosis in patients and has specific differences in these injuries. The purpose of this article was to dwell in detail on the most promising immunobiochemical markers of sepsis in the format of a mini-review, based on the main aspects of the immunopathogenesis of this complication. The pathogenesis of a burn injury and any general pathological process is based on an inflammatory reaction and large-scale changes in the skin and mucous membranes. This review is devoted to the progress in understanding the main aspects of the immunopathogenesis of burn lesions and the features of post-burn immune dysfunction, manifested by disorders in the innate and adaptive immunity systems. Attention is focused on the role in the immunopathogenesis of the development of systemic and local disorders in burn injury. Characterization of primary immunobiochemical markers of burn injury (cytokines, growth factors, C-reactive protein, procalcitonin, presepsin, matrix metalloproteinases, reactive oxygen species, nitric oxide, hemostasis parameters) is presented. The problem of treating burn lesions is associated with constant monitoring of the condition of patients and regular monitoring of specific immunobiochemical markers predicting sepsis for the timely initiation of a specific therapy.
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Affiliation(s)
- Tatyana A. Kuznetsova
- Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (N.N.B.)
- Correspondence: ; Tel.: +7-(423)-244-2446
| | - Boris G. Andryukov
- Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (N.N.B.)
- School of Medicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia
| | - Natalia N. Besednova
- Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (N.N.B.)
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Besednova NN, Andryukov BG, Zaporozhets TS, Kuznetsova TA, Kryzhanovsky SP, Ermakova SP, Galkina IV, Shchelkanov MY. Molecular Targets of Brown Algae Phlorotannins for the Therapy of Inflammatory Processes of Various Origins. Mar Drugs 2022; 20:243. [PMID: 35447916 PMCID: PMC9025421 DOI: 10.3390/md20040243] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/24/2022] [Accepted: 03/29/2022] [Indexed: 01/27/2023] Open
Abstract
Inflammatory reactions are part of a complex biological response that plays a vital role in the appearance of various stimuli resulting from tissue and cell damage, the invasion of pathogenic bacteria, and the formation of the subsequent adaptive immune response. The production of many triggers and mediators of inflammation, which are inducers of pro-inflammatory factors, is controlled by numerous differentiation programs, through which inflammation is resolved and tissue homeostasis is restored. However, prolonged inflammatory responses or dysregulation of pro-inflammatory mechanisms can lead to chronic inflammation. Modern advances in biotechnology have made it possible to characterize the anti-inflammatory activity of phlorotannins, polyphenolic compounds from brown seaweed, and the mechanisms by which they modulate the inflammatory response. The purpose of this review is to analyze and summarize the results of numerous experimental in vitro and in vivo studies, illustrating the regulatory mechanisms of these compounds, which have a wide range of biological effects on the body. The results of these studies and the need for further research are discussed.
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Affiliation(s)
- Natalya N. Besednova
- Somov Research Institute of Epidemiology and Microbiology by Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (M.Y.S.)
| | - Boris G. Andryukov
- Somov Research Institute of Epidemiology and Microbiology by Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (M.Y.S.)
- School of Medicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
| | - Tatyana S. Zaporozhets
- Somov Research Institute of Epidemiology and Microbiology by Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (M.Y.S.)
| | - Tatyana A. Kuznetsova
- Somov Research Institute of Epidemiology and Microbiology by Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (M.Y.S.)
| | - Sergey P. Kryzhanovsky
- Medical Association of the Far Eastern Branch of the Russian Academy of Sciences, 690022 Vladivostok, Russia;
| | - Svetlana P. Ermakova
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 690022 Vladivostok, Russia;
| | - Irina V. Galkina
- School of Medicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
| | - Mikhail Yu. Shchelkanov
- Somov Research Institute of Epidemiology and Microbiology by Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (M.Y.S.)
- School of Medicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, 690091 Vladivostok, Russia
- Zhirmunsky National Scientific Center, Marine Biology of the Far Eastern Branch of the Russian Academy of Sciences, 690091 Vladivostok, Russia
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Besednova NN, Zaporozhets TS, Andryukov BG, Kryzhanovsky SP, Ermakova SP, Kuznetsova TA, Voronova AN, Shchelkanov MY. Antiparasitic Effects of Sulfated Polysaccharides from Marine Hydrobionts. Mar Drugs 2021; 19:637. [PMID: 34822508 PMCID: PMC8624348 DOI: 10.3390/md19110637] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/07/2021] [Accepted: 11/10/2021] [Indexed: 12/15/2022] Open
Abstract
This review presents materials characterizing sulfated polysaccharides (SPS) of marine hydrobionts (algae and invertebrates) as potential means for the prevention and treatment of protozoa and helminthiasis. The authors have summarized the literature on the pathogenetic targets of protozoa on the host cells and on the antiparasitic potential of polysaccharides from red, brown and green algae as well as certain marine invertebrates. Information about the mechanisms of action of these unique compounds in diseases caused by protozoa has also been summarized. SPS is distinguished by high antiparasitic activity, good solubility and an almost complete absence of toxicity. In the long term, this allows for the consideration of these compounds as effective and attractive candidates on which to base drugs, biologically active food additives and functional food products with antiparasitic activity.
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Affiliation(s)
- Natalya N. Besednova
- G.P. Somov Research Institute of Epidemiology and Microbiology, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (T.S.Z.); (B.G.A.); (T.A.K.); (A.N.V.); (M.Y.S.)
| | - Tatyana S. Zaporozhets
- G.P. Somov Research Institute of Epidemiology and Microbiology, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (T.S.Z.); (B.G.A.); (T.A.K.); (A.N.V.); (M.Y.S.)
| | - Boris G. Andryukov
- G.P. Somov Research Institute of Epidemiology and Microbiology, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (T.S.Z.); (B.G.A.); (T.A.K.); (A.N.V.); (M.Y.S.)
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia
| | - Sergey P. Kryzhanovsky
- Medical Association of the Far Eastern Branch of the Russian Academy of Sciences, 690022 Vladivostok, Russia;
| | - Svetlana P. Ermakova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 690022 Vladivostok, Russia;
| | - Tatyana A. Kuznetsova
- G.P. Somov Research Institute of Epidemiology and Microbiology, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (T.S.Z.); (B.G.A.); (T.A.K.); (A.N.V.); (M.Y.S.)
| | - Anastasia N. Voronova
- G.P. Somov Research Institute of Epidemiology and Microbiology, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (T.S.Z.); (B.G.A.); (T.A.K.); (A.N.V.); (M.Y.S.)
| | - Mikhail Y. Shchelkanov
- G.P. Somov Research Institute of Epidemiology and Microbiology, Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (T.S.Z.); (B.G.A.); (T.A.K.); (A.N.V.); (M.Y.S.)
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia
- National Scientific Center of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences, 690041 Vladivostok, Russia
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the Russian Academy of Sciences, 690022 Vladivostok, Russia
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Kuznetsova TA, Andryukov BG, Makarenkova ID, Zaporozhets TS, Besednova NN, Fedyanina LN, Kryzhanovsky SP, Shchelkanov MY. The Potency of Seaweed Sulfated Polysaccharides for the Correction of Hemostasis Disorders in COVID-19. Molecules 2021; 26:2618. [PMID: 33947107 PMCID: PMC8124591 DOI: 10.3390/molecules26092618] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 02/07/2023] Open
Abstract
Hemostasis disorders play an important role in the pathogenesis, clinical manifestations, and outcome of COVID-19. First of all, the hemostasis system suffers due to a complicated and severe course of COVID-19. A significant number of COVID-19 patients develop signs of hypercoagulability, thrombocytopenia, and hyperfibrinolysis. Patients with severe COVID-19 have a tendency toward thrombotic complications in the venous and arterial systems, which is the leading cause of death in this disease. Despite the success achieved in the treatment of SARS-CoV-2, the search for new effective anticoagulants, thrombolytics, and fibrinolytics, as well as their optimal dose strategies, continues to be relevant. The wide therapeutic potential of seaweed sulfated polysaccharides (PSs), including anticoagulant, thrombolytic, and fibrinolytic activities, opens up new possibilities for their study in experimental and clinical trials. These natural compounds can be important complementary drugs for the recovery from hemostasis disorders due to their natural origin, safety, and low cost compared to synthetic drugs. In this review, the authors analyze possible pathophysiological mechanisms involved in the hemostasis disorders observed in the pathological progression of COVID-19, and also focus the attention of researchers on seaweed PSs as potential drugs aimed to correction these disorders in COVID-19 patients. Modern literature data on the anticoagulant, antithrombotic, and fibrinolytic activities of seaweed PSs are presented, depending on their structural features (content and position of sulfate groups on the main chain of PSs, molecular weight, monosaccharide composition and type of glycosidic bonds, the degree of PS chain branching, etc.). The mechanisms of PS action on the hemostasis system and the issues of oral bioavailability of PSs, important for their clinical use as oral anticoagulant and antithrombotic agents, are considered. The combination of the anticoagulant, thrombolytic, and fibrinolytic properties, along with low toxicity and relative cheapness of production, open up prospects for the clinical use of PSs as alternative sources of new anticoagulant and antithrombotic compounds. However, further investigation and clinical trials are needed to confirm their efficacy.
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Affiliation(s)
- Tatyana A. Kuznetsova
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (I.D.M.); (T.S.Z.); (N.N.B.); (M.Y.S.)
| | - Boris G. Andryukov
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (I.D.M.); (T.S.Z.); (N.N.B.); (M.Y.S.)
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
| | - Ilona D. Makarenkova
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (I.D.M.); (T.S.Z.); (N.N.B.); (M.Y.S.)
| | - Tatyana S. Zaporozhets
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (I.D.M.); (T.S.Z.); (N.N.B.); (M.Y.S.)
| | - Natalya N. Besednova
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (I.D.M.); (T.S.Z.); (N.N.B.); (M.Y.S.)
| | - Ludmila N. Fedyanina
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
| | - Sergey P. Kryzhanovsky
- Medical Association of the Far Eastern Branch of the Russian Academy of Sciences, 690022 Vladivostok, Russia;
| | - Mikhail Yu. Shchelkanov
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (I.D.M.); (T.S.Z.); (N.N.B.); (M.Y.S.)
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
- Federal Scientific Center of the Eastern Asia Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, 690091 Vladivostok, Russia
- National Scientific Center of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, 690091 Vladivostok, Russia
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Besednova NN, Andryukov BG, Zaporozhets TS, Kryzhanovsky SP, Fedyanina LN, Kuznetsova TA, Zvyagintseva TN, Shchelkanov MY. Antiviral Effects of Polyphenols from Marine Algae. Biomedicines 2021; 9:200. [PMID: 33671278 PMCID: PMC7921925 DOI: 10.3390/biomedicines9020200] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/12/2021] [Accepted: 02/14/2021] [Indexed: 02/07/2023] Open
Abstract
The disease-preventive and medicinal properties of plant polyphenolic compounds have long been known. As active ingredients, they are used to prevent and treat many noncommunicable diseases. In recent decades, marine macroalgae have attracted the attention of biotechnologists and pharmacologists as a promising and almost inexhaustible source of polyphenols. This heterogeneous group of compounds contains many biopolymers with unique structure and biological properties that exhibit high anti-infective activity. In the present review, the authors focus on the antiviral potential of polyphenolic compounds (phlorotannins) from marine algae and consider the mechanisms of their action as well as other biological properties of these compounds that have effects on the progress and outcome of viral infections. Effective nutraceuticals, to be potentially developed on the basis of algal polyphenols, can also be used in the complex therapy of viral diseases. It is necessary to extend in vivo studies on laboratory animals, which subsequently will allow proceeding to clinical tests. Polyphenolic compounds have a great potential as active ingredients to be used for the creation of new antiviral pharmaceutical substances.
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Affiliation(s)
- Natalya N. Besednova
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (M.Y.S.)
| | - Boris G. Andryukov
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (M.Y.S.)
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
| | - Tatyana S. Zaporozhets
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (M.Y.S.)
| | - Sergey P. Kryzhanovsky
- Medical Association of the Far Eastern Branch of the Russian Academy of Sciences, 690022 Vladivostok, Russia;
| | - Ludmila N. Fedyanina
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
| | - Tatyana A. Kuznetsova
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (M.Y.S.)
| | | | - Mikhail Yu. Shchelkanov
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (M.Y.S.)
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
- Federal Scientific Center of the Eastern Asia Terrestrial Biodiversity, Far Eastern Branch of Russian Academy of Sciences, 690091 Vladivostok, Russia
- National Scientific Center of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, 690091 Vladivostok, Russia
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Andryukov BG, Besednova NN, Kuznetsova TA, Fedyanina LN. Laboratory-Based Resources for COVID-19 Diagnostics: Traditional Tools and Novel Technologies. A Perspective of Personalized Medicine. J Pers Med 2021; 11:jpm11010042. [PMID: 33451039 PMCID: PMC7828525 DOI: 10.3390/jpm11010042] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/09/2021] [Accepted: 01/12/2021] [Indexed: 01/08/2023] Open
Abstract
The coronavirus infection 2019 (COVID-19) pandemic, caused by the highly contagious SARS-CoV-2 virus, has provoked a global healthcare and economic crisis. The control over the spread of the disease requires an efficient and scalable laboratory-based strategy for testing the population based on multiple platforms to provide rapid and accurate diagnosis. With the onset of the pandemic, the reverse transcription polymerase chain reaction (RT-PCR) method has become a standard diagnostic tool, which has received wide clinical use. In large-scale and repeated examinations, these tests can identify infected patients with COVID-19, with their accuracy, however, dependent on many factors, while the entire process takes up to 6–8 h. Here we also describe a number of serological systems for detecting antibodies against SARS-CoV-2. These are used to assess the level of population immunity in various categories of people, as well as for retrospective diagnosis of asymptomatic and mild COVID-19 in patients. However, the widespread use of traditional diagnostic tools in the context of the rapid spread of COVID-19 is hampered by a number of limitations. Therefore, the sharp increase in the number of patients with COVID-19 necessitates creation of new rapid, inexpensive, sensitive, and specific tests. In this regard, we focus on new laboratory technologies such as loop mediated isothermal amplification (LAMP) and lateral flow immunoassay (LFIA), which have proven to work well in the COVID-19 diagnostics and can become a worthy alternative to traditional laboratory-based diagnostics resources. To cope with the COVID-19 pandemic, the healthcare system requires a combination of various types of laboratory diagnostic testing techniques, whodse sensitivity and specificity increases with the progress in the SARS-CoV-2 research. The testing strategy should be designed in such a way to provide, depending on the timing of examination and the severity of the infection in patients, large-scale and repeated examinations based on the principle: screening–monitoring–control. The search and development of new methods for rapid diagnostics of COVID-19 in laboratory, based on new analytical platforms, is still a highly important and urgent healthcare issue. In the final part of the review, special emphasis is made on the relevance of the concept of personalized medicine to combat the COVID-19 pandemic in the light of the recent studies carried out to identify the causes of variation in individual susceptibility to SARS-CoV-2 and increase the efficiency and cost-effectiveness of treatment.
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Affiliation(s)
- Boris G. Andryukov
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (N.N.B.); (T.A.K.)
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
- Correspondence: ; Tel.: +7-4232-304-647
| | - Natalya N. Besednova
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (N.N.B.); (T.A.K.)
| | - Tatyana A. Kuznetsova
- G.P. Somov Institute of Epidemiology and Microbiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 690087 Vladivostok, Russia; (N.N.B.); (T.A.K.)
| | - Ludmila N. Fedyanina
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
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10
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Besednova NN, Andryukov BG, Zaporozhets TS, Kryzhanovsky SP, Kuznetsova TA, Fedyanina LN, Makarenkova ID, Zvyagintseva TN. Algae Polyphenolic Compounds and Modern Antibacterial Strategies: Current Achievements and Immediate Prospects. Biomedicines 2020; 8:E342. [PMID: 32932759 PMCID: PMC7554682 DOI: 10.3390/biomedicines8090342] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/03/2020] [Accepted: 09/07/2020] [Indexed: 12/26/2022] Open
Abstract
The increasing drug resistance of pathogenic microorganisms raises concern worldwide and necessitates the search for new natural compounds with antibacterial properties. Marine algae are considered a natural and attractive biotechnological source of novel antibiotics. The high antimicrobial activity of their polyphenolic compounds is a promising basis for designing innovative pharmaceuticals. They can become both a serious alternative to traditional antimicrobial agents and an effective supplement to antibiotic therapy. The present review summarizes the results of numerous studies on polyphenols from algae and the range of biological activities that determine their biomedical significance. The main focus is put on a group of the polyphenolic metabolites referred to as phlorotannins and, particularly, on their structural diversity and mechanisms of antimicrobial effects. Brown algae are an almost inexhaustible resource with a high biotechnological potential for obtaining these polyfunctional compounds. An opinion is expressed that the effectiveness of the antibacterial activity of phlorotannins depends on the methods of their extraction aimed at preserving the phenolic structure. The use of modern analytical tools opens up a broad range of opportunities for studying the metabolic pathways of phlorotannins and identifying their structural and functional relationships. The high antimicrobial activity of phlorotannins against both Gram-positive and Gram-negative bacteria provides a promising framework for creating novel drugs to be used in the treatment and prevention of infectious diseases.
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Affiliation(s)
- Natalya N. Besednova
- Somov Research Institute of Epidemiology and Microbiology, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (I.D.M.)
| | - Boris G. Andryukov
- Somov Research Institute of Epidemiology and Microbiology, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (I.D.M.)
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
| | - Tatyana S. Zaporozhets
- Somov Research Institute of Epidemiology and Microbiology, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (I.D.M.)
| | - Sergey P. Kryzhanovsky
- Medical Association of the Far Eastern Branch of the Russian Academy of Sciences, 690022 Vladivostok, Russia;
| | - Tatyana A. Kuznetsova
- Somov Research Institute of Epidemiology and Microbiology, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (I.D.M.)
| | - Ludmila N. Fedyanina
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russia;
| | - Ilona D. Makarenkova
- Somov Research Institute of Epidemiology and Microbiology, 690087 Vladivostok, Russia; (B.G.A.); (T.S.Z.); (T.A.K.); (I.D.M.)
| | - Tatyana N. Zvyagintseva
- Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 690022 Vladivostok, Russia;
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11
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Andryukov BG, Besednova NN, Kuznetsova TA, Zaporozhets TS, Ermakova SP, Zvyagintseva TN, Chingizova EA, Gazha AK, Smolina TP. Sulfated Polysaccharides from Marine Algae as a Basis of Modern Biotechnologies for Creating Wound Dressings: Current Achievements and Future Prospects. Biomedicines 2020; 8:E301. [PMID: 32842682 PMCID: PMC7554790 DOI: 10.3390/biomedicines8090301] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 08/18/2020] [Accepted: 08/21/2020] [Indexed: 12/22/2022] Open
Abstract
Wound healing involves a complex cascade of cellular, molecular, and biochemical responses and signaling processes. It consists of successive interrelated phases, the duration of which depends on a multitude of factors. Wound treatment is a major healthcare issue that can be resolved by the development of effective and affordable wound dressings based on natural materials and biologically active substances. The proper use of modern wound dressings can significantly accelerate wound healing with minimum scar mark. Sulfated polysaccharides from seaweeds, with their unique structures and biological properties, as well as with a high potential to be used in various wound treatment methods, now undoubtedly play a major role in innovative biotechnologies of modern natural interactive dressings. These natural biopolymers are a novel and promising biologically active source for designing wound dressings based on alginates, fucoidans, carrageenans, and ulvans, which serve as active and effective therapeutic tools. The goal of this review is to summarize available information about the modern wound dressing technologies based on seaweed-derived polysaccharides, including those successfully implemented in commercial products, with a focus on promising and innovative designs. Future perspectives for the use of marine-derived biopolymers necessitate summarizing and analyzing results of numerous experiments and clinical trial data, developing a scientifically substantiated approach to wound treatment, and suggesting relevant practical recommendations.
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Affiliation(s)
- Boris G. Andryukov
- Somov Research Institute of Epidemiology and Microbiology, 690087 Vladivostok, Russian; (N.N.B.); (T.A.K.); (T.S.Z.); (A.K.G.); (T.P.S.)
- School of Biomedicine, Far Eastern Federal University (FEFU), 690091 Vladivostok, Russian
| | - Natalya N. Besednova
- Somov Research Institute of Epidemiology and Microbiology, 690087 Vladivostok, Russian; (N.N.B.); (T.A.K.); (T.S.Z.); (A.K.G.); (T.P.S.)
| | - Tatyana A. Kuznetsova
- Somov Research Institute of Epidemiology and Microbiology, 690087 Vladivostok, Russian; (N.N.B.); (T.A.K.); (T.S.Z.); (A.K.G.); (T.P.S.)
| | - Tatyana S. Zaporozhets
- Somov Research Institute of Epidemiology and Microbiology, 690087 Vladivostok, Russian; (N.N.B.); (T.A.K.); (T.S.Z.); (A.K.G.); (T.P.S.)
| | - Svetlana P. Ermakova
- Elyakov Pacific Institute of Bioorganic Chemistry (PIBOC) FEB RAS, 690022 Vladivostok, Russian; (S.P.E.); (T.N.Z.); (E.A.C.)
| | - Tatyana N. Zvyagintseva
- Elyakov Pacific Institute of Bioorganic Chemistry (PIBOC) FEB RAS, 690022 Vladivostok, Russian; (S.P.E.); (T.N.Z.); (E.A.C.)
| | - Ekaterina A. Chingizova
- Elyakov Pacific Institute of Bioorganic Chemistry (PIBOC) FEB RAS, 690022 Vladivostok, Russian; (S.P.E.); (T.N.Z.); (E.A.C.)
| | - Anna K. Gazha
- Somov Research Institute of Epidemiology and Microbiology, 690087 Vladivostok, Russian; (N.N.B.); (T.A.K.); (T.S.Z.); (A.K.G.); (T.P.S.)
| | - Tatyana P. Smolina
- Somov Research Institute of Epidemiology and Microbiology, 690087 Vladivostok, Russian; (N.N.B.); (T.A.K.); (T.S.Z.); (A.K.G.); (T.P.S.)
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12
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Kuznetsova TA, Persiyanova EV, Zaporozhets TS, Besednova NN. [Adjuvants of influenza vaccines: new possibilities of using sulphated polysaccharides from marine brown algae.]. Vopr Virusol 2020; 64:5-11. [PMID: 30893523 DOI: 10.18821/0507-4088-2019-64-1-5-11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 10/31/2018] [Indexed: 06/09/2023]
Abstract
The review article presents the characteristics of the main adjuvant groups (mineral salts of aluminum, synthetic squalenebased adjuvants - MF59 and AS03, CpG-oligodeoxynucleotides, virosomes, polyoxidonium, sovidone) included in the licensed influenza vaccine. The main mechanisms of adjuvant action, advantages and disadvantages of these adjuvants are shown. The vaccines adjuvants in the phase of experimental studies and clinical trials (ISCOMs, Advax™, chitosan) are described too. Particular attention is paid to sulfated polysaccharides (fucoidans) from marine brown algae as vaccine adjuvants. Numerous results of their application in compositions of experimental vaccines are presented. The prospects of sulfated polysaccharides using in the design of influenza vaccines are estimated. These prospects are determined by high biocompatibility, low toxicity and good tolerance of the human body to fucoidans, as well as mechanisms of their adjuvant activity. Sulfated polysaccharides are agonists of toll-like receptors of innate immunity cells and powerful inducers of the cellular and humoral immune response, which is important for the development of influenza vaccines. The review is based on the information presented in the bibliographic and abstract databases of scientific publications, search engines and publishers: RSCI, Web of Science, Scopus, MEDLINE, Google Scholar, PubMed, Springer Nature, Elsevier and others.
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Affiliation(s)
- T A Kuznetsova
- Research Somov Institute of Epidemiology and Microbiology, Vladivostok, 690087, Russian Federation
| | - E V Persiyanova
- Research Somov Institute of Epidemiology and Microbiology, Vladivostok, 690087, Russian Federation
- Medical Association of Far East Branch of the Russian Academy of Sciences, Vladivostok, 690022, Russian Federation
| | - T S Zaporozhets
- Research Somov Institute of Epidemiology and Microbiology, Vladivostok, 690087, Russian Federation
| | - N N Besednova
- Research Somov Institute of Epidemiology and Microbiology, Vladivostok, 690087, Russian Federation
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13
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Persiyanova EV, Kuznetsova TA, Silchenko AS. Effect of Sulfated Polysaccharides from Marine Hydrobionts on Humoral Immune Response to Ovalbumin in Mice. Bull Exp Biol Med 2020; 169:246-248. [PMID: 32651818 DOI: 10.1007/s10517-020-04860-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Indexed: 10/23/2022]
Abstract
Adjuvant activity of fucoidans in experimental vaccine compositions with ovalbumin was studied on a mouse model. Compositions with sulfated polysaccharides from brown alga Fucus evanescens (native fucoidan in combination with polyphenols, and a product of fucoidan enzymatic hydrolysis) induced multiple productions of antigen-specific antibodies - total IgG, its isotypes IgG1 and, especially, IgG2a, in comparison with an individual ovalbumin. The adjuvant effect of native and structurally modified fucoidans is slightly inferior to that of the traditional licensed aluminum hydroxide adjuvant. The results indicate the prospects of using sulfated polysaccharides from F. evanescens as adjuvants in vaccines.
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Affiliation(s)
- E V Persiyanova
- Laboratory of Immunology, G. P. Somov Research Institute of Epidemiology and Microbiology, Vladivostok, Russia.
| | - T A Kuznetsova
- Laboratory of Immunology, G. P. Somov Research Institute of Epidemiology and Microbiology, Vladivostok, Russia
| | - A S Silchenko
- Laboratory of Enzyme Chemistry, G. B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russia
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14
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Besednova NN, Zaporozhets TS, Kuznetsova TA, Makarenkova ID, Kryzhanovsky SP, Fedyanina LN, Ermakova SP. Extracts and Marine Algae Polysaccharides in Therapy and Prevention of Inflammatory Diseases of the Intestine. Mar Drugs 2020; 18:E289. [PMID: 32486405 PMCID: PMC7345783 DOI: 10.3390/md18060289] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/27/2020] [Accepted: 05/27/2020] [Indexed: 12/14/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a serious public health problem worldwide. Current therapeutic strategies that use anti-inflammatory drugs, immunosuppressants, and biological treatments are often ineffective and have adverse health effects. In this regard, the use of natural compounds aimed at key pathogenic therapeutic targets in IBD attracts universal attention. Seaweed is a valuable source of structurally diverse biologically active compounds. The materials presented in the review indicate that seaweed extracts and polysaccharides are effective candidates for the development of drugs, biological food additives, and functional nutrition products for the treatment and prevention of IBD. The structural features of algal polysaccharides provide the possibility of exposure to therapeutic targets of IBD, including proinflammatory cytokines, chemokines, adhesion molecules, nuclear factor NF-kB, intestinal epithelial cells, reactive oxygen and nitrogen. Further study of the relationship between the effect of polysaccharides from different types of algae, with different structure and molecular weights on immune and epithelial cells, intestinal microorganisms will contribute to a deeper understanding of their mechanisms and will help in the development of drugs, dietary supplements, functional foods for the treatment of patients with IBD.
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Affiliation(s)
- Natalya N. Besednova
- Somov Institute of Epidemiology and Microbiology, Vladivostok 690087, Russia; (N.N.B.); (T.A.K.); (I.D.M.)
| | - Tatyana S. Zaporozhets
- Somov Institute of Epidemiology and Microbiology, Vladivostok 690087, Russia; (N.N.B.); (T.A.K.); (I.D.M.)
| | - Tatyana A. Kuznetsova
- Somov Institute of Epidemiology and Microbiology, Vladivostok 690087, Russia; (N.N.B.); (T.A.K.); (I.D.M.)
| | - Ilona D. Makarenkova
- Somov Institute of Epidemiology and Microbiology, Vladivostok 690087, Russia; (N.N.B.); (T.A.K.); (I.D.M.)
| | - Sergey P. Kryzhanovsky
- School of Biomedicine, Far Eastern Federal University, Vladivostok 690087, Russia; (S.P.K.); (L.N.F.)
| | - Lydmila N. Fedyanina
- School of Biomedicine, Far Eastern Federal University, Vladivostok 690087, Russia; (S.P.K.); (L.N.F.)
| | - Svetlana P. Ermakova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, FEB RAS, Vladivostok 690022, Russia;
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15
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Kuznetsova TA, Smolina TP, Makarenkova ID, Ivanushko LA, Persiyanova EV, Ermakova SP, Silchenko AS, Zaporozhets TS, Besednova NN, Fedyanina LN, Kryzhanovsky SP. Immunoadjuvant Activity of Fucoidans from the Brown Alga Fucus evanescens. Mar Drugs 2020; 18:E155. [PMID: 32168741 PMCID: PMC7143619 DOI: 10.3390/md18030155] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/06/2020] [Accepted: 03/09/2020] [Indexed: 11/24/2022] Open
Abstract
Thе study presents the results of a comparative evaluation of the effect of structural modifications of fucoidans from the brown alga Fucus evanescens (native, highly purified рroduct of fucoidan enzymatic hydrolysis, a new regular 1→3;1→4-α-L-fucan, sulphated mainly at C2 and acetylated at C4 of the fucose residue) on the effector functions of innate and adaptive immunity cells in vitro and in vivo. Using flow cytometry, we found that all examined fucoidans induce the maturation of dendritic cells, enhance the ability of neutrophils to migrate and adhere, activate monocytes and enhance their antigen-presenting functions, and increase the cytotoxic potential of natural killers. Fucoidans increase the production of hepatitis B virus (HBs) specific IgG and cytokine Th1 (IFN-γ, TNF-α) and Th2 (IL-4) profiles in vivo. The data obtained suggest that in vitro and in vivo adjuvant effects of the products of fucoidan enzymatic hydrolysis with regular structural characteristics are comparable to those of the native fucoidan. Based on these data, the products of fucoidan enzymatic hydrolysis can be considered as an effective and safe candidate adjuvant to improve the efficacy of prophylactic and therapeutic vaccines.
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Affiliation(s)
- Tatyana A. Kuznetsova
- Somov Institute of Epidemiology and Microbiology, Vladivostok 690087, Russia; (T.P.S.); (I.D.M.); (L.A.I.); (E.V.P.); (T.S.Z.); (N.N.B.)
| | - Tatyana P. Smolina
- Somov Institute of Epidemiology and Microbiology, Vladivostok 690087, Russia; (T.P.S.); (I.D.M.); (L.A.I.); (E.V.P.); (T.S.Z.); (N.N.B.)
| | - Ilona D. Makarenkova
- Somov Institute of Epidemiology and Microbiology, Vladivostok 690087, Russia; (T.P.S.); (I.D.M.); (L.A.I.); (E.V.P.); (T.S.Z.); (N.N.B.)
| | - Lydmila A. Ivanushko
- Somov Institute of Epidemiology and Microbiology, Vladivostok 690087, Russia; (T.P.S.); (I.D.M.); (L.A.I.); (E.V.P.); (T.S.Z.); (N.N.B.)
| | - Elena V. Persiyanova
- Somov Institute of Epidemiology and Microbiology, Vladivostok 690087, Russia; (T.P.S.); (I.D.M.); (L.A.I.); (E.V.P.); (T.S.Z.); (N.N.B.)
| | - Svetlana P. Ermakova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok 690022, Russia; (S.P.E.); (A.S.S.)
| | - Artem S. Silchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok 690022, Russia; (S.P.E.); (A.S.S.)
| | - Tatyana S. Zaporozhets
- Somov Institute of Epidemiology and Microbiology, Vladivostok 690087, Russia; (T.P.S.); (I.D.M.); (L.A.I.); (E.V.P.); (T.S.Z.); (N.N.B.)
| | - Natalya N. Besednova
- Somov Institute of Epidemiology and Microbiology, Vladivostok 690087, Russia; (T.P.S.); (I.D.M.); (L.A.I.); (E.V.P.); (T.S.Z.); (N.N.B.)
| | - Lydmila N. Fedyanina
- Far Eastern Federal University, School of Biomedicine, Vladivostok, 690922, Russia; (L.N.F.); (S.P.K.)
| | - Sergey P. Kryzhanovsky
- Far Eastern Federal University, School of Biomedicine, Vladivostok, 690922, Russia; (L.N.F.); (S.P.K.)
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16
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Besednova NN, Zvyagintseva TN, Kuznetsova TA, Makarenkova ID, Smolina TP, Fedyanina LN, Kryzhanovsky SP, Zaporozhets TS. Marine Algae Metabolites as Promising Therapeutics for the Prevention and Treatment of HIV/AIDS. Metabolites 2019; 9:E87. [PMID: 31052506 PMCID: PMC6572556 DOI: 10.3390/metabo9050087] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 04/18/2019] [Accepted: 04/26/2019] [Indexed: 11/17/2022] Open
Abstract
This review presents an analysis of works devoted to the anti-human immunodeficiency virus (HIV) activity of algae metabolites-sulfated polysaccharides (fucoidans, carrageenans), lectins, laminarans, and polyphenols. Despite the presence of a significant number of antiretroviral drugs, the development of new therapeutic and prophylactic agents against this infection remains very urgent problem. This is due to the variability of HIV, the absence of an animal model (except monkeys) and natural immunity to this virus and the toxicity of therapeutic agents and their high cost. In this regard, the need for new therapeutic approaches and broad-spectrum drugs, which in addition to antiviral effects can have anti-inflammatory, antioxidant, and immunomodulatory effects, and to which the minimum resistance of HIV strains would be formed. These requirements meet the biologically active substances of marine algae. The results of experimental and clinical studies conducted in vitro and in vivo are presented, and the issues of the anti-HIV activity of these compounds are considered depending on their structural features. On the whole, the presented data prove the high efficiency of seaweed metabolites and justify the possibility of their use as a potential basis for the development of new drugs with a wide spectrum of activity.
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Affiliation(s)
- Natalya N Besednova
- Federal State Budgetary Scientific Institution, Somov Research Institute of Epidemiology and Microbiology, Sel'skaya street, 1, 690087 Vladivostok, Russia.
| | - Tatyana N Zvyagintseva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Pr. 100-letiya Vladivostoka, 159, 690022 Vladivostok, Russia.
| | - Tatyana A Kuznetsova
- Federal State Budgetary Scientific Institution, Somov Research Institute of Epidemiology and Microbiology, Sel'skaya street, 1, 690087 Vladivostok, Russia.
| | - Ilona D Makarenkova
- Federal State Budgetary Scientific Institution, Somov Research Institute of Epidemiology and Microbiology, Sel'skaya street, 1, 690087 Vladivostok, Russia.
| | - Tatyana P Smolina
- Federal State Budgetary Scientific Institution, Somov Research Institute of Epidemiology and Microbiology, Sel'skaya street, 1, 690087 Vladivostok, Russia.
| | - Ludmila N Fedyanina
- Far Eastern Federal University, School of Biomedicine, bldg. M25 FEFU Campus, Ajax Bay, Russky Isl., 690922 Vladivostok, Russia.
| | | | - Tatyana S Zaporozhets
- Federal State Budgetary Scientific Institution, Somov Research Institute of Epidemiology and Microbiology, Sel'skaya street, 1, 690087 Vladivostok, Russia.
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17
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Kuznetsova TA, Ivanushko LA, Persiyanova EV, Ermakova SP, Besednova NN. Markers of Systemic Inflammation in Experimental Dyslipidemia Induced by P-407: Modulation with Fucoidan from Brown Alga Fucus evanescens. Bull Exp Biol Med 2019; 166:766-769. [PMID: 31028586 DOI: 10.1007/s10517-019-04436-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Indexed: 02/01/2023]
Abstract
The effect of sulfated polysaccharide from brown alga Fucus evanescens (fucoidan) administered via different routes (peroral and parenteral) on the dynamic of some lipid metabolism parameters and markers of systemic inflammation in mice with experimental dyslipidemia induced by prolonged administration of poloxamer P-407. It was found that fucoidan corrected the main parameters of lipid metabolism, reduced the level of endothelial dysfunction marker endothelin-1 and proinflammatory cytokines TNFα, IFNγ in blood serum in animals with experimental dyslipidemia. These findings open prospects for using fucoidan in the complex treatment of metabolic disorders and atherosclerotic inflammation.
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Affiliation(s)
- T A Kuznetsova
- G. P. Somov Research Institute of Epidemiology and Microbiology, Far-Eastern Division of the Russian Academy of Sciences, Vladivostok, Russia.
| | - L A Ivanushko
- G. P. Somov Research Institute of Epidemiology and Microbiology, Far-Eastern Division of the Russian Academy of Sciences, Vladivostok, Russia
| | - E V Persiyanova
- G. P. Somov Research Institute of Epidemiology and Microbiology, Far-Eastern Division of the Russian Academy of Sciences, Vladivostok, Russia
| | - S P Ermakova
- G. B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Division of the Russian Academy of Sciences, Vladivostok, Russia
| | - N N Besednova
- G. P. Somov Research Institute of Epidemiology and Microbiology, Far-Eastern Division of the Russian Academy of Sciences, Vladivostok, Russia
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Lapitskaya VA, Kuznetsova TA, Chizhik SA, Rogachev AA. Morphology of multilayer metal-carbon coatings with different arrangements of functional layers. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/443/1/012020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Lapitskaya VA, Kuznetsova TA, Chizhik SA, Sudzilouskaya KA, Kotov DA, Nikitiuk SA, Zaparozhchanka YV. Lateral force microscopy as a method of surface control after low-temperature plasma treatment. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/443/1/012019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Kuznetsova TA, Lapitskaya VA, Chizhik SA, Uglov VV, Shymanski VI, Kvasov NT. Morphology of multilayer AlN/SiN coatings with layers of different thickness. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/443/1/012018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Kuznetsova TA, Persiyanova EV, Ermakova SP, Khotimchenko MY, Besednova NN. The Sulfated Polysaccharides of Brown Algae and Products of Their Enzymatic Transformation as Potential Vaccine Adjuvants. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300837] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The review is devoted to critical analysis of literature data, deal with effects and mechanisms of action of sulfated polysaccharides (PSs) – fucoidans from brown algae and products of their enzymatic transformation as potential adjuvants for enhancement of anti-infective and antitumor immune response. Numerous experimental data indicate that sulfated PSs demonstrate properties of vaccine adjuvants. Application perspectiveness of fucoidans as vaccine adjuvants is defined by their high biocompatibility, low-toxicity, safety and good tolerance by macroorganism, and also mechanisms of their immunomodulatory action. In particular, fucoidans are agonists of receptors of innate immunity and strong inducers of cellular and humoral immune response. At presenting the data of structural - functional interrelations, attention focused to the defining role of degree of sulfation, uronic acids and polyphenols contents, and also molecular mass in actions of fucoidans to innate and adaptive immunity cells. Insufficiency of literary data on studying of correlation of structure – physicochemical characteristics with adjuvanticities of the sulfated PSs, and also the problem of standardization of their active fractions are noted. Special attention is paid to the analysis of immunomodulatory and adjuvant activity of fucoidan oligosaccharides. Presented here results of experimental trial indicate that, despite the difficulties due to preparation of highly purified structurally characterized fractions and complex structure of fucoidans, these substances can be used as safe and effective adjuvants in vaccines against various pathogens including viruses, and also in antitumor vaccines.
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Affiliation(s)
- Tatyana A. Kuznetsova
- Federal State Budgetary Scientific Institution «Research Somov Institute of Epidemiology and Microbiology», Sel'skaya street, 1, 690087, Vladivostok, Russian Federation
- Far Eastern Federal University, School of Biomedicine, bldg. M25 FEFU Campus, Ajax Bay, Russky Isl., 690922 Vladivostok, Russian Federation
| | - Elena V. Persiyanova
- Federal State Budgetary Scientific Institution «Research Somov Institute of Epidemiology and Microbiology», Sel'skaya street, 1, 690087, Vladivostok, Russian Federation
| | - Svetlana P. Ermakova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Pr. 100-letya Vladivostoka 159, 690022, Vladivostok, Russian Federation
| | - Maxim Yu. Khotimchenko
- Far Eastern Federal University, School of Biomedicine, bldg. M25 FEFU Campus, Ajax Bay, Russky Isl., 690922 Vladivostok, Russian Federation
| | - Natalya N. Besednova
- Federal State Budgetary Scientific Institution «Research Somov Institute of Epidemiology and Microbiology», Sel'skaya street, 1, 690087, Vladivostok, Russian Federation
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Kuznetsova TA, Ivanushko LA, Persiyanova EV, Shutikova AL, Ermakova SP, Khotimchenko MY, Besednova NN. [Evaluation of adjuvant effects of fucoidane from brown seaweed Fucus evanescens and its structural analogues for the strengthening vaccines effectiveness]. Biomed Khim 2017; 63:553-558. [PMID: 29251618 DOI: 10.18097/pbmc20176306553] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The use of sulfated polysaccharides from brown seaweed Fucus evanescens as adjuvants (native fucoidan in combination with polyphenols, fucoidan without polyphenols, a product of enzymatic hydrolysis of fucoidan) stimulated the formation of specific antibodies to the surface antigen of the hepatitis B virus (HBs-AG). Immunization of mice with vaccine compositions containing HBs-AG and fucoidan samples resulted in increasing the serum level of the pro-inflammatory (TNF-a, IFN-g, IL-2) cytokines. Increased production of these cytokines was detected in the culture of splenocytes additionally stimulated in vitro by fucoidans or phytohemagglutinin. The adjuvant effect of fucoidan and its structural modifications was comparable to that of the traditional licensed adjuvant aluminum hydroxide. The obtained results indicate a promising use of sulfated polysaccharides from F. evanescens as vaccine adjuvants.
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Affiliation(s)
- T A Kuznetsova
- Somov Research Institute of Epidemiology and Microbiology, Vladivostok, Russia; Far Eastern Federal University, Vladivostok, Russia
| | - L A Ivanushko
- Somov Research Institute of Epidemiology and Microbiology, Vladivostok, Russia
| | - E V Persiyanova
- Somov Research Institute of Epidemiology and Microbiology, Vladivostok, Russia
| | - A L Shutikova
- Somov Research Institute of Epidemiology and Microbiology, Vladivostok, Russia
| | - S P Ermakova
- Elyakov Pacific Institute of Bioorganic Chemistry, Vladivostok, Russia
| | | | - N N Besednova
- Somov Research Institute of Epidemiology and Microbiology, Vladivostok, Russia
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Zolotykh AN, Dorofeev SG, Bubenov SS, Kuznetsova TA. Tetrapod-shaped quantum dots with secondary excitonic luminescence. Mendeleev Communications 2017. [DOI: 10.1016/j.mencom.2017.01.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Kuznetsova TA, Besednova NN, Zaporozhets TS, Kovalev NN, Usov VV, Zemlyanoi AB. Biologically Active Substances from Marine Hydrobionts with Antibacterial Activity in Composition of New Wound Dressings. Antibiot Khimioter 2016; 61:14-18. [PMID: 29874447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The data on the experimental study of the efficacy of the gel wound dressings based on chitosan and calcium alginate containing bioactive substances from marine hydrobionts with complex therapeutic action (sulfated polysaccharides from brown algae, hydrolyzed bivalves, peptides from nerve ganglia of cephalopods) are described. The model of thermal burns complicated by Staphylococcus aureus infection was used. Planimetric and bacteriological investigations revealed pronounced wound healing and antibacterial effects of the gel coating. The gel containing sulfated polysaccharides from brown algae showed the highest wound healing activity.
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25
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Besednova NN, Kovalev NN, Zaporozhets TS, Kuznetsova TA, Gazha AK. [Cephalopods as a Source of New Antimicrobial Substances]. Antibiot Khimioter 2016; 61:32-42. [PMID: 27337865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Under the conditions of emergence of microbial strains with new properties, including antibiotic resistance, in human and animal populations the search for new antimicrobial substances with improved pharmacological properties and new mechanisms of action from natural objects, in particular from aquatic organisms, is continued. This review presents extensive data on antibacterial, antiviral and antifungal properties of biologically active substances (BAS) of different chemical nature, recovered from representatives of the class of cephalopods (squid, octopus, cuttlefish, nautilus). Analysis of the literature shows that antibacterial activity of some BAS is not inferior, but in some cases is even superior to that of the available antibiotics. The authors note that the review includes the results, mainly of the in vitro studies. Adequate extrapolation of these data to the in vivo conditions is required, that could serve as foundation for development of new generations of medicinal compounds, functional foods and biologically active food supplements.
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Kuznetsova TA, Smolina TP, Besednova NN, Silchenko AS, Imbs TI, Ermakova SP. [Effect of Sulfated Polysaccharides from Brown Alga Fucus evanescens and Their Enzymatic Transformation Product on Functional Activity of Innate Immunity Cells.]. Antibiot Khimioter 2016; 61:10-14. [PMID: 29533555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
The effect of sulfated polysaccharides (PS) from brown alga Fucus evanescens and their enzymatic transformation and low molecular weight product on the functional activity of the innate immunity cells, i.e. polymorphonuclear leukocytes of human peripheral blood (NF) was comparatively studied. The in vitro NF contact with PS resulted in significant changes in the functional activity of NF, evident from higher density of molecules CD69, CD14, CD11b on the cell membranes with simultaneous lowering of that of CD62L and increased phagocytic and bactericidal activity of NF. The low molecular weight product resulting from fucoidan transformation with fucoidanases showed a higher effect on the level of the molecules CD14, CD11b and CD62L expression vs. the high molecular weight PS.
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MESH Headings
- Antigens, CD/genetics
- Antigens, CD/immunology
- Antigens, Differentiation, T-Lymphocyte/genetics
- Antigens, Differentiation, T-Lymphocyte/immunology
- CD11c Antigen/genetics
- CD11c Antigen/immunology
- Fucus/chemistry
- Gene Expression Regulation/drug effects
- Glycoside Hydrolases/chemistry
- Humans
- Hydrolysis
- L-Selectin/genetics
- L-Selectin/immunology
- Lectins, C-Type/genetics
- Lectins, C-Type/immunology
- Leukocytes, Mononuclear/cytology
- Leukocytes, Mononuclear/drug effects
- Leukocytes, Mononuclear/immunology
- Lipopolysaccharide Receptors/genetics
- Lipopolysaccharide Receptors/immunology
- Phagocytosis/drug effects
- Polysaccharides/chemistry
- Polysaccharides/isolation & purification
- Polysaccharides/pharmacology
- Primary Cell Culture
- Sulfates/chemistry
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27
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Gazha AK, Zaporozhets TS, Kuznetsova TA, Zvyaguintseva TN, Besednova NN. Effect of Sulfated Polysaccharides from Brown Algae on Apoptosis of Human Peripheral Blood Lymphocytes. Bull Exp Biol Med 2015; 159:617-9. [PMID: 26459478 DOI: 10.1007/s10517-015-3028-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Indexed: 02/01/2023]
Abstract
We studied the influence of fucoidans from brown algae Fucus evanescens, Laminaria cichorioides and Laminaria japonica on apoptosis of human peripheral blood lymphocytes. It was demonstrated that fucoidans induced lymphocyte apoptosis, increased the proportion of cells with low mitochondrial transmembrane potential, and inhibit expression of Bcl-xL gene in blood lymphocytes. These findings suggest that lymphocyte apoptosis induced by the analyzed sulfated polysaccharides is mediated by mitochondrial pathway.
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Affiliation(s)
- A K Gazha
- G. P. Somov Research Institute of Epidemiology and Microbiology, Siberian Division of the Russian Academy of Sciences, Vladivostok, Russia.
| | - T S Zaporozhets
- G. P. Somov Research Institute of Epidemiology and Microbiology, Siberian Division of the Russian Academy of Sciences, Vladivostok, Russia
| | - T A Kuznetsova
- G. P. Somov Research Institute of Epidemiology and Microbiology, Siberian Division of the Russian Academy of Sciences, Vladivostok, Russia
| | - T N Zvyaguintseva
- G. B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - N N Besednova
- G. P. Somov Research Institute of Epidemiology and Microbiology, Siberian Division of the Russian Academy of Sciences, Vladivostok, Russia
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Naumova EI, Zharova GK, Chistova TY, Kuznetsova TA. [The Effect of Coprophagy on the Size of Plant Fibers in the Digestive Tract of Hares Lepus europaeus and L. timidus (Lagomorpha, Leporidae)]. Izv Akad Nauk Ser Biol 2015:503-508. [PMID: 26638238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have studied the distribution of plant fibers of different sizes in the digestive tracts of two hare species: the brown hare (Lepus euopaeus) and the mountain hare (L. timidus). In all studied hares (18 specimens), the highest amount of fine-sized fibers (less than 0.25 mm length) was observed in the cecum (50-70% of the total fiber mass). It was found out that the fine-sized content in the digestive tract, and especially in the cecum, is provided not only by the separation mechanism of the colon, but also by coprophagy. It was shown that repeated passage of food through the digestive tract compensates small volume of the cecum and increases the period of digestion of the same portions of food.
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29
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Vecherskii MV, Kuznetsova TA, Stepan'kov AA. Activity of urealytic microorganisms in the gastrointestinal tract of the black grouse Lyrurus tetrix. Dokl Biol Sci 2015; 462:131-3. [PMID: 26164332 DOI: 10.1134/s0012496615030060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Indexed: 11/22/2022]
Affiliation(s)
- M V Vecherskii
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia,
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Krivosheeva AM, Buzoleva LS, Aizdaicher NA, Kuznetsova TA. [The Stimulating Effect of Exometabolites of the Marine Microalgae Phaeodactylum tricornutum Bohlin on Reproduction of Listeria monocytogenes]. Izv Akad Nauk Ser Biol 2015:376-381. [PMID: 26415278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The biological activity of ethyl acetate extract of exometabolites from the marine microalgae Phaeodactylum tricornutum against a test culture of Listeria monocytogenes 4b has been investigated. It was shown that the stimulating effect of algal exometabolites on the growth of pathogenic bacteria increased maximally by 98.3% on day 6 of the cultivation, if the active substances comprising the culture liquid of P. tricornutum were separated by successive extractions with solvents in order of increasing polarity (hexane, benzene, ethyl acetate), and by 150% on day 3, if the substances from the ethyl acetate extract of exometabolites were separated by column chromatography. It is noted that the fraction of biologically active substances maximally stimulating the growth of L. monocytogenes can be used to prepare an accumulation medium for detecting these patho- genic bacteria in marine environments and hydrobionts.
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Besednova NN, Zaporozhets TS, Somova LM, Kuznetsova TA. Review: prospects for the use of extracts and polysaccharides from marine algae to prevent and treat the diseases caused by Helicobacter pylori. Helicobacter 2015; 20:89-97. [PMID: 25660579 DOI: 10.1111/hel.12177] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Helicobacter pylori possesses a broad spectrum of pathogenic factors that allow it to survive and colonize the gastric mucosa, and thus, the pathogenetic targets, which have the same diversity, require search for and the development of alternative, effective, and innocuous means for the eradication of H. pylori. In recent years, fucoidans have been extensively studied due to the numerous interesting biological activities, including the anti-adhesive, anti-oxidative, antitoxic, immunomodulatory, anticoagulant, and anti-infection effects. This review summarizes the data on the effects of extracts and sulfated polysaccharides of marine algae, mainly fucoidans, on pathogenic targets in Helicobacter infection. The pathogenetic targets for therapeutic agents after H. pylori infection, such as flagellas, urease, and other enzymes, including adhesins, cytotoxin A (VacA), phospholipase, and L-8, are characterized here. The main target for the sulfated polysaccharides of seaweed is cell receptors of the gastric mucosa. This review presents the published data about the pleiotropic anti-inflammatory effects of polysaccharides on the gastric mucosa. It is known that fucoidan and other sulfated polysaccharides from algae have anti-ulcer effects, prevent the adhesion of H. pylori to, and reduce the formation of biofilm. The authors speculate that the effect of sulfated polysaccharides on the infectious process caused by H. pylori is related to their action on innate and adaptive immunity cells, and also anti-oxidant and antitoxic potential. Presented in the review are materials indicated for the study of extracts and sulfated polysaccharides from seaweed during H. pylori infection, as these compounds are characterized by multimodality actions. Based on the analysis of literary materials in recent years, the authors concluded that fucoidan can be attributed to the generation of new candidates to create drugs intended for the inclusion in the scheme of eradication therapy of H. pylori infection.
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Affiliation(s)
- Natalya N Besednova
- G.P. Somov Research Institute of Epidemiology and Microbiology, Siberian Branch of the Russian Academy of Medical Sciences, Vladivostok, Russia
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Kuznetsova TA, Makarenkova ID, Koneva EL, Aminina NM, Yakush EV. [Effect of probiotic product containing bifidobacteria and biogel from brown algae on the intestinal microflora and parameters of innate immunity in mice with experimental drug dysbacteriosis]. Vopr Pitan 2015; 84:73-9. [PMID: 26402946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The article represents the results of studying the effect of a new fermented product (FP) containing the probiotic strain Bifidobacterium bifidum 791 and Biogel from brown algae Laminariajaponica on the composition of intestinal microflora and parameters of innate immunity in mice with experimental dysbacteriosis, induced by administration of gentamicin in dose of 25 mg per kg body weight during 7 days. The experimental animals received for 6 weeks in addition to the diet FP, which was 2% of the average volume of feed intake. The FP influence was manifested by more rapid reduction of dyspepsia symptoms, restoration of body weight and balance the intestinal microbiocenosis (increasing of bifido- and lactobacteria, typical E. coli, reducing of the bacteria genus Proteus and Clostridium, elimination of S. aureus). As the results of FP administration we observed the statistically significant reduction of endogenous intoxication values and increasing of the phagocyte activity of neutrophils, related to effector cells of innate immunity, compared with animals not receiving FP. Identified effects of FP are due to both its probiotic properties through the presence of bifidobacteria and immunomodulating and enteral sorbtion activities of alginate component.
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Besednova NN, Kuznetsova TA, Zaporozhets TS, Zvyagintseva TN. [Brown Seaweeds as a Source of New Pharmaceutical Substances with Antibacterial Action]. Antibiot Khimioter 2015; 60:31-41. [PMID: 26415381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
At present the increase of antibiotic resistance in infection agents to antimicrobial drugs requires discovery of new antimicrobial substances with improved pharmacological properties and novel mechanisms of action, to which microorganisms do not develop resistance. Three areas are of interest for the search: recovery of new compounds from natural objects, including aquatic organisms, chemical modification of the known antibiotic molecules, discovery of compounds with antimicrobial activity among some new chemical structures which have no analogues in nature. The review is mainly concerned with discussion of antibacterial, antiviral and antifungal activity of sulfated polysaccharides (fucoidans) and extracts of brown, red and green algae, as well as of antioxidant, antiinflammatory, immunomodulatory and antiendotoxin properties that contribute to their antiinfective action. Such an activity makes fucoidans promising as a basis for developing new drugs for therapy of infectious diseases.
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Kuznetsova TA, Beschastnyĭ AP, Alferov SV, Trotsenko IA. [Properties of modified amperometric biosensors based on methanol dehydrogenase and Methylobacterium nodulans cells]. APPL BIOCHEM MICRO+ 2014; 49:613-8. [PMID: 25434185 DOI: 10.1134/s0003683813060100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The properties of amperometric biosensors based on methanol dehydrogenase (MDH), Methylobacterium nodulans cells, and the ferrocene-modified carbon paste electrode were investigated. It was shown that the addition ofhydroxyapatite (HA) to a carbon paste increased the sensitivity and operating stability of MDH biosensors. The linear range of the electrode was 0.0135-0.5 and 0.032-1.5 mM for methanol and formaldehyde, respectively. The detection limit of methanol and formaldehyde was 4.5 and 11.0 microM, respectively. The loss of activity of the electrode within 10 days of storage in the presence of 2.0 mM KCN did not exceed 12%. Cyanide (10 mM) completely inhibited the sensor responses to formaldehyde (1.0 mM), which allowed for the selective determination of methanol in the presence of formaldehyde. The biosensor based on cells exhibited lower stability and sensitivity toward methanol and formaldehyde; the sensitivity coefficients were 980 and 21 nA/mM, respectively.
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Kuznetsova TA, Kryzhanovskii SP, Bogdanovich LN, Besednova NN. Effect of biologically active substances derived from hydrobionts of the Pacific Ocean on parameters of lipid metabolism during experimental hypercholesterolemia. Bull Exp Biol Med 2014; 158:188-91. [PMID: 25430644 DOI: 10.1007/s10517-014-2719-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Indexed: 10/24/2022]
Abstract
We studied the effect of biologically active substances derived from hydrobionts, namely maristim (natural product from sea urchin roe) and fucolam (polysaccharides of fucoidan and calcium alginate from brown algae) on blood biochemistry in the mouse model of nutritional hypercholesterolemia. Maristim and fucolam are found to be capable to normalize the levels of the major indicators of lipid and carbohydrate metabolism and aminotransferase enzyme activity in terms of atherogenic load. Correction action of biologically active substances is more expressed in combined application. Identified experimentally normalizing effects of maristim and on lipid and carbohydrate metabolism allow us to recommend the further study in clinical trials of these biologically active substances and based on them additives.
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Affiliation(s)
- T A Kuznetsova
- G. P. Somov Research Institute of Epidemiology and Microbiology, Siberian Division of Russian Academy of Medical Sciences, Novosibirsk, Russia,
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Kuznetsova TA, Vechersky MV, Golichenkov MV, Kostina NV, Umarov MM, Naumova EI. Nitrogen-fixing microorganisms in the hare gastrointestinal tract. Dokl Biol Sci 2014; 456:203-5. [PMID: 24985516 DOI: 10.1134/s0012496614030119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Indexed: 11/22/2022]
Affiliation(s)
- T A Kuznetsova
- Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, Moscow, 119071, Russia,
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Bubenov SS, Dorofeev SG, Kotin PA, Znamenkov KO, Kuznetsova TA. Oleic capped CdSe nanocrystals silver-doped in the course of synthesis. Mendeleev Communications 2014. [DOI: 10.1016/j.mencom.2014.06.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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38
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Vecherskiĭ MV, Kuznetsova TA, Kostina NA, Gorlenko MV, Golichenkov MB, Umarov MM, Naumova EI. [Role of microbiocenosis of the gastrointestinal tract in the nutrition of grouse]. Izv Akad Nauk Ser Biol 2014:281-285. [PMID: 25731039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In order to assess the role of the microbiocenosis of the digestive tract of herbivorous birds in transforming poor forage, the activity of cellulolytic enzymes in all departments of the gastrointestinal tract of the black grouse (Lyrurus tetrix) and Western capercaillie (Tetrao urogallus) was studied. The functional diversity of microbial communities of different departments was also investigated. In both species of birds, nitrogenase and cellobiohydrolase activities were discovered in the digestive tract, with the maximum observed in the cecum.
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Kuznetsova TA, Besednova NN, Somova LM, Plekhova NG. Fucoidan extracted from Fucus evanescens prevents endotoxin-induced damage in a mouse model of endotoxemia. Mar Drugs 2014; 12:886-98. [PMID: 24492521 PMCID: PMC3944521 DOI: 10.3390/md12020886] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 01/24/2014] [Accepted: 01/26/2014] [Indexed: 12/27/2022] Open
Abstract
An important problem of treating patients with endotoxemia is to find drugs to reduce the negative effects of endotoxin on the organism. We tested fucoidan (sulfated polysaccharide) from the brown alga Fucus evanescens as a potential drug in a mouse model of endotoxemia inducted by lipopolysaccharide (LPS). The survival time of mice injected with LPS increased under fucoidan treatment compared with the group of mice injected with LPS only. The preventive administration of fucoidan to mice with endotoxemia resulted in inhibition of increased levels of proinflammatory cytokines (TNFα and IL-6), as well as decreasing of the processes of hypercoagulability. The parenteral or per os administration of fucoidan resulted in decreasing the degree of microcirculatory disorders and secondary dystrophic-destructive changes in parenchymal organs of mice with endotoxemia. Taken together, these results demonstrate that fucoidan prevents endotoxin-induced damage in a mouse model of endotoxemia and increases the mice's resistance to LPS.
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Affiliation(s)
- Tatyana A Kuznetsova
- Laboratory of immunology, G.P. Somov Research Institute of Epidemiology and Microbiology, Siberian Branch of Russian Academy of Medical Sciences, 1 Selskya St., Vladivostok 690087, Russia.
| | - Natalya N Besednova
- Laboratory of immunology, G.P. Somov Research Institute of Epidemiology and Microbiology, Siberian Branch of Russian Academy of Medical Sciences, 1 Selskya St., Vladivostok 690087, Russia.
| | - Larisa M Somova
- Laboratory of pathomorphology, G.P. Somov Research Institute of Epidemiology and Microbiology, Siberian Branch of Russian Academy of Medical Sciences, 1 Selskya St., Vladivostok 690087, Russia.
| | - Natalya G Plekhova
- Laboratory of pathomorphology, G.P. Somov Research Institute of Epidemiology and Microbiology, Siberian Branch of Russian Academy of Medical Sciences, 1 Selskya St., Vladivostok 690087, Russia.
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Besednova NN, Zaporozhets TS, Kuznetsova TA, Kryzhanovskiĭ SP, Kovalev NN, Zviagintseva TN. [Hepatoprotective effects of extracts and polysaccharides from seaweed]. Antibiot Khimioter 2014; 59:30-37. [PMID: 25300119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Antioxidants of natural origin are considered as possible agents for prevention and treatment of liver diseases. Marine algae and in particular their extracts and obtained from them sulfated polysaccharides are significant sources of natural antioxidants. The recent data on the effect of the extracts and sulfated polysaccharides of seaweed on the functional activity of the liver with injuries induced by CCl4, some drugs (paracetamol, diclofenac), N-nitrosocompounds, aflatoxin are presented in the review. Particular attention is paid to the effect of sulfated polysaccharides and in particular fucoidans on the functional activity of the liver in patients with chronic viral hepatitis C. Fucoidan is highly safe and active not only as an antioxidant but also as an inhibitor of HCV replication, has antiinflammatory and immunomodulating effects. The data of the review allow to conclude that seaweed extracts and sulfated polysaccharides may be a basis for development of new generation drugs in the future for the treatment and prevention of liver diseases.
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Kuznetsova TA, Kam M, Khokhlova IS, Kostina NV, Dobrovolskaya TG, Umarov MM, Degen AA, Shenbrot GI, Krasnov BR. Desert gerbils affect bacterial composition of soil. Microb Ecol 2013; 66:940-9. [PMID: 23857378 DOI: 10.1007/s00248-013-0263-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 06/27/2013] [Indexed: 05/24/2023]
Abstract
Rodents affect soil microbial communities by burrow architecture, diet composition, and foraging behavior. We examined the effect of desert rodents on nitrogen-fixing bacteria (NFB) communities by identifying bacteria colony-forming units (CFU) and measuring nitrogen fixation rates (ARA), denitrification (DA), and CO2 emission in soil from burrows of three gerbil species differing in diets. Psammomys obesus is folivorous, Meriones crassus is omnivorous, consuming green vegetation and seeds, and Dipodillus dasyurus is predominantly granivorous. We also identified NFB in the digestive tract of each rodent species and in Atriplex halimus and Anabasis articulata, dominant plants at the study site. ARA rates of soil from burrows of the rodent species were similar, and substantially lower than control soil, but rates of DA and CO2 emission differed significantly among burrows. Highest rates of DA and CO2 emission were measured in D. dasyurus burrows and lowest in P. obesus. CFU differed among bacteria isolates, which reflected dietary selection. Strains of cellulolytic representatives of the family Myxococcaceae and the genus Cytophaga dominated burrows of P. obesus, while enteric Bacteroides dominated burrows of D. dasyurus. Burrows of M. crassus contained both cellulolytic and enteric bacteria. Using discriminant function analysis, differences were revealed among burrow soils of all rodent species and control soil, and the two axes accounted for 91 % of the variance in bacterial occurrences. Differences in digestive tract bacterial occurrences were found among these rodent species. Bacterial colonies in P. obesus and M. crassus burrows were related to bacteria of A. articulata, the main plant consumed by both species. In contrast, bacteria colonies in the burrow soil of D. dasyurus were related to bacteria in its digestive tract. We concluded that gerbils play an important role as ecosystem engineers within their burrow environment and affect the microbial complex of the nitrogen-fixing organisms in soils.
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Affiliation(s)
- Tatyana A Kuznetsova
- Laboratory of Ecology and Functional Morphology in Higher Vertebrates, Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, Moscow, 119071, Russia
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Naumova EI, Zharova GK, Kuznetsova TA, Chistova TI, Danilkin AA. [Morphological provision for the specialization of hares to coprophagy: the architectonics of the mucous surface of the intestine]. Izv Akad Nauk Ser Biol 2013:713-719. [PMID: 25518557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The macro- and microstructures of the surface of the mucous membrane of the gastrointestinal tract were studied in detail in two hare species (Lepus europaeus and L. timidus) using scanning electron and digital microscopes. The morphology of the gastrointestinal tract of hares, which is similar in the two species studied, was described in detail. The macrostructure of the inner surface of the ileocecal junction was investigated. The particularities of the architectonics of the mucous membrane of the intestine that are specific for hares were revealed. In the jejunum of both hare species, the mucous membrane is represented by villi with merged bases, which form circular plates. The mucosa of the colon forms large conical villi, the surface of which is scattered with secreting cells. The possible functional significance of the revealed morphological particularities is discussed.
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Kuznetsova TA, Zaporozhets TS, Besedova NN, Timchenko NF, Kryzhanovskiĭ SP, Golovacheva VD, Zviagintseva TN, Shevchenko NM. [Efficiency of a new synbiotic drink in treatment of chronic diseases of gastrointestinal tract and concomitant dysbacteriosis]. Antibiot Khimioter 2013; 58:21-6. [PMID: 24738239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The efficacy of a novel synbiotic drink in the complex therapy of patients withchronic diseases of the gastrointestinal tract and concominant intestinal dysbacteriosis was investigated in a randomized trial. The synbiotic drink contains a probiotic strain of bifidobacteria and Fucus evanescens polysaccharides with prebiotic activity and broad spectrum of the biological action on the patients. The use of the synbiotic drink provided more evident reduction of the clinical symptomes, more efficient recovery of the intestinal microflora and higher percentage of the patients cure vs. the routine therapy and the therapy with inclusion of sour milk bifidobacterin.
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Kuznetsova TA, Besednova NN, Zaporozhets TS, Smolina TP, Kazha AK, Ivanushko LA. [Comparative study of immunomodulatory activity of peptides, tinrostim and thymalin]. Antibiot Khimioter 2013; 58:8-12. [PMID: 24734422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The immunomodulatory activity of peptide drugs i.e. tinrostim (dosage form) prepared of squid optical ganglia and pharmacopoeia thymain was studied. Tinrostim showed a stimulating effect on the humoral and cellular nimmune responses when administered parenterally in experimental animals, as well as on the phagocytic activity of neutrophils, comparable to the effect of thymalin. It was demonstrated that both the peptide drugs increased the production of pro-(TNFa, IL-1) and antiinflammatory (IL- 10) cytokines in the culture of intact cells of peripheral blood in vitro. It is essential that when tinrostim was used in 10-fold different doses (0.005 mg / kg and 0.05 mg /kg) in mice, the effect of the lower dose was comparable to the effect of the higher dose.
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Fedulova EN, Zhukova EA, Kuznetsova TA, Shumilova OV, Fedorova OV, Tutina OA. [Forward-morphological criteria of ulcerative colitis relapse and continuous flow in children]. Vestn Ross Akad Med Nauk 2013:32-36. [PMID: 24640718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
UNLABELLED Inflammatory bowel disease is one of the most difficult groups of pathologies in pediatric gastroenterology, due to the steady growth of their prevalence, offset debut at an earlier age, the increase in the incidence of severe complicated forms. Established clinical, genetic, serologic criteria for progression of ulcerative colitis are contradictory, and some--the reach of most medical institutions. PURPOSE to evaluate the prognostic significance of morphological features of ulcerative colitis relapse and continuous flow. MATERIALS AND METHODS a retrospective study conducted histological kolonobioptatov 26 children with recurrent, 20--with a continuous flow of ulcerative colitis during their primary treatment in a hospital, the comparison group consisted of 50 children without inflammatory bowel disease. RESULTS morphological characteristics identified predictors of recurrent ulcerative colitis in the form of severe eosinophilic infiltration of the epithelium, lamina propria of the mucosa. For a continuous flow was characterized: high density cell infiltration of the lamina propria mucosa epithelium predominantly under represented plasma cells, fibroblasts, sclerosis of the basal membrane, the presence of epithelial arcades deformed crypt abscesses. CONCLUSION the extended study of biopsy material, including assessment of the composition and location of infiltration, fibroblast pool of epithelial-connective relationships in the colonic mucosa of children with ulcerative colitis will not only assess the inflammatory process, but also to predict the course of disease, thereby defining a long-term tactics treatment.
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Kurbatova EV, Kaminski DA, Erokhin VV, Volchenkov GV, Andreevskaya SN, Chernousova LN, Demikhova OV, Ershova JV, Kaunetis NV, Kuznetsova TA, Larionova EE, Smirnova TG, Somova TR, Vasilieva IA, Vorobieva AV, Zolkina SS, Cegielski JP. Performance of Cepheid ® Xpert MTB/RIF ® and TB-Biochip ® MDR in two regions of Russia with a high prevalence of drug-resistant tuberculosis. Eur J Clin Microbiol Infect Dis 2012; 32:735-43. [PMID: 23263819 DOI: 10.1007/s10096-012-1798-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 12/03/2012] [Indexed: 11/27/2022]
Abstract
The purpose of this study was to assess the performance of Cepheid® Xpert MTB/RIF® ("Xpert") and TB-Biochip® MDR ("TB-Biochip"). Sputum specimens from adults with presumptive tuberculosis (TB) were homogenized and split for: (1) direct Xpert and microscopy, and (2) concentration for Xpert, microscopy, culture [Lowenstein-Jensen (LJ) solid media and Mycobacteria Growth Indicator Tube® (MGIT)], indirect drug susceptibility testing (DST) using the absolute concentration method and MGIT, and TB-Biochip. In total, 109 of 238 (45.8 %) specimens were culture-positive for Mycobacterium tuberculosis complex (MTBC), and, of these, 67 isolates were rifampicin resistant (RIF-R) by phenotypic DST and 64/67 (95.5 %) were isoniazid resistant (INH-R). Compared to culture of the same specimen, a single direct Xpert was more sensitive for detecting MTBC [95.3 %, 95 % confidence interval (CI), 90.0-98.3 %] than direct (59.6 %, 95 % CI, 50.2-68.5 %) or concentrated smear (85.3 %, 95 % CI, 77.7-91.1 %) or LJ culture (80.8 %, 95 % CI, 72.4-87.5 %); the specificity was 86.0 % (95 % CI, 78.9-91.3 %). Compared with MGIT DST, Xpert correctly identified 98.2 % (95 % CI, 91.5-99.9 %) of RIF-R and 95.5 % (95 % CI, 85.8-99.2 %) of RIF-susceptible (RIF-S) specimens. In a subset of 104 specimens, the sensitivity of TB-Biochip for MTBC detection compared to culture was 97.3 % (95 % CI, 91.0-99.5 %); the specificity was 78.1 % (95 % CI, 61.5-89.9 %). TB-Biochip correctly identified 100 % (95 % CI, 94.2-100 %) of RIF-R, 94.7 % (95 % CI, 76.7-99.7 %) of RIF-S, 98.2 % (95 % CI, 91.4-99.9 %) of INH-R, and 78.6 % (95 % CI, 52.1-94.2 %) of INH-S specimens compared to MGIT DST. Xpert and Biochip were similar in accuracy for detecting MTBC and RIF resistance compared to conventional culture methods.
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Affiliation(s)
- E V Kurbatova
- The U.S. Centers for Disease Control and Prevention, CDC, Atlanta, GA 30333, USA
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Kuznetsova TA, Beschastnyĭ AP, Ponomareva ON, Trotsenko IA. [Purification and characteristics of methanol dehydrogenase of Methylobacterium nodulans rhizosphere phytosymbionts]. Prikl Biokhim Mikrobiol 2012; 48:606-611. [PMID: 23330386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Methanol dehydrogenase (MDG) of the facultative methylotrophic phytosymbiont Methylobacterium nodulans has been purified for the first time to an electrophoretically homogeneous state and characterized. The native protein with a molecular mass of 70 kDa consists of large (60 kDa) and small (6 kDa) subunits. The purified protein displayed a specter identical to that of pyrochinolinchinon (PCC)-containing MDGs (pI 8.7, pH optimum in the range 9-10). The enzyme was inactive in the absence of ammonium or methylamine and exhibited a wide substrate specificity with regard to C1-C2 alcohols with the highest affinity to methanol (K(M) = 70 mM), but it did not oxidize benzyl and secondary alcohols. The apparent values of K(M) to primary alcohols increased with the length of the carbonic chain. The enzyme was characterized by a high stability level even in the absence of a substrate. An immobilized enzyme was used for amperometric methanol detection.
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Lapikova ES, Drozd NN, Makarov VA, Zviagintseva TN, Shevchenko NM, Kuznetsova TA, Besednova NN. [Influence of intravenous injection of fucoidan from brown seaweed Fucus evanescens by plasma rabbits anticoagulant activity and neutralisation by sulphate protamin of fucoidans antithrombin activity in vitro]. Patol Fiziol Eksp Ter 2012:42-4. [PMID: 22708408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
With fucoidan from Fucus evanescens dose increase from 1 to 5 mg/kg plasma coagulation time in test A(see symbol)TB increases. Sulphate protamin in final concentration 0.67-1.35 mkg/ml will neutralise antithrombin activity of fucoidans from brown seaweed Fucus evanescens and Laminaria cichorioides. The gravimetrichesky relation for the investigated samples makes an antidot/anticoagulant 1.
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Iashina LM, Shatrova LE, Zhdanova KS, Kuznetsova TA. [The influence of radon baths on the lipid profile of patients with cardiovascular diseases and dyslipidemia]. Vopr Kurortol Fizioter Lech Fiz Kult 2011:3-4. [PMID: 21584952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The present study included 82 patients at the age from 28 to 60 years (46 women and 36 men). Radiotherapy was given to 44 patients of whom 27 presented with cardiovascular diseases (CVD) and 17 with diseases of the locomotor apparatus (LA) and concomitant dislipoproteinemia (DLP). The control group was comprised of 38 subjects (27 with CVD and 11 with LA disease + DLP). The patients received radiotherapy every other day as a series of 8-9 radon baths (water temperature 36-37 degrees C) for 10-15 min each at a radon concentration of 20-40 nCi/l (total dose 1.2 mSv). The treatment caused a significant increase of serum cholesterol (CL) and high-density lipoproteide (HDLP) levels with simultaneous reduction of the atherogenicity index and a tendency towards a decrease in the levels of total cholesterol, cholesterol of low density lipoproteides (LDLP), and triglicerides. Clinically, the desired level of arterial pressure was reached in 77.2% of the patients.
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Drozd NN, Miftakhova NT, Savchik EI, Kalinina TB, Makarov VA, Imbs TI, Zviagintseva TN, Kuznetsova TA, Besednova NN. [Antithrombotic and hemorrhagic activities of fucoidan isolated from Fucus evanescens brown algae]. Eksp Klin Farmakol 2011; 74:26-30. [PMID: 21809694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The antithrombotic and hemorrhagic activities of fucoidan with molecular weight within 20 - 40 kD isolation from Fucus evanescens seaweed have been investigated. The antithrombin activity of fucoidan is 41 +/- 9 aIIa IU/mg and the anti-factor Oà activity is 38 +/- 8 aOà IU/mg. The antithrombin and anti-factor Oà activities of plasma, antithrombotic activity (100% prevention of formation of a blood clot observed at a dose of 10 mg/kg), and hemorrhagic activity (to a lesser degree, than that of unfractionated heparin in comparable antithrombotic activity doses) increase as the doses of fucoidan increases from 2.5 to 10 mg/kg at intravenous injection in rats.
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