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Tyubaeva PM, Varyan IA, Gasparyan KG, Romanov RR, Yurina LV, Vasilyeva AD, Popov AA, Arzhakova OV. Life Cycle of Functional All-Green Biocompatible Fibrous Materials Based on Biodegradable Polyhydroxybutyrate and Hemin: Synthesis, Service Life, and the End-of-Life via Biodegradation. ACS Appl Bio Mater 2024; 7:2325-2337. [PMID: 38483087 DOI: 10.1021/acsabm.4c00010] [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: 04/16/2024]
Abstract
This article addresses the entire life cycle of the all-green fibrous materials based on poly(3-hydroxybutyrate) (PHB) containing a natural biocompatible additive Hemin (Hmi): from preparation, service life, and the end of life upon in-soil biodegradation. Fibrous PHB/Hmi materials with a highly developed surface and interconnected porosity were prepared by electrospinning (ES) from Hmi-containing feed solutions. Structural organization of the PHB/Hmi materials (porosity, uniform structure, diameter of fibers, surface area, distribution of Hmi within the PHB matrix, phase composition, etc.) is shown to be governed by the ES conditions: the presence of even minor amounts of Hmi in the PHB/Hmi (below 5 wt %) serves as a powerful tool for the control over their structure, performance, and biodegradation. Service characteristics of the PHB/Hmi materials (wettability, prolonged release of Hmi, antibacterial activity, breathability, and mechanical properties) were studied by different physicochemical methods (scanning electron microscopy, Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, differential scanning calorimetry, contact angle measurements, antibacterial tests, etc.). The effect of the structural organization of the PHB/Hmi materials on their in-soil biodegradation at the end of life was analyzed, and key factors providing efficient biodegradation of the PHB/Hmi materials at all stages (from adaptation to mineralization) are highlighted (high surface area and porosity, thin fibers, release of Hmi, etc.). The proposed approach allows for target-oriented preparation and structural design of the functional PHB/Hmi nonwovens when their structural supramolecular organization with a highly developed surface area controls both their service properties as efficient antibacterial materials and in-soil biodegradation upon the end of life.
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Affiliation(s)
- Polina M Tyubaeva
- Academic Department of Technology and Chemistry of Innovative Materials, Plekhanov University of Economics, Stremyanny per. 36, Moscow 117997 Russia
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina ul. 4, Moscow 119334, Russia
| | - Ivetta A Varyan
- Academic Department of Technology and Chemistry of Innovative Materials, Plekhanov University of Economics, Stremyanny per. 36, Moscow 117997 Russia
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina ul. 4, Moscow 119334, Russia
| | - Kristina G Gasparyan
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina ul. 4, Moscow 119334, Russia
| | - Roman R Romanov
- Academic Department of Technology and Chemistry of Innovative Materials, Plekhanov University of Economics, Stremyanny per. 36, Moscow 117997 Russia
| | - Lyubov V Yurina
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina ul. 4, Moscow 119334, Russia
| | - Alexandra D Vasilyeva
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina ul. 4, Moscow 119334, Russia
| | - Anatoly A Popov
- Academic Department of Technology and Chemistry of Innovative Materials, Plekhanov University of Economics, Stremyanny per. 36, Moscow 117997 Russia
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina ul. 4, Moscow 119334, Russia
| | - Olga V Arzhakova
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, 119991 Moscow, Russia
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Tyubaeva PM, Varyan IA, Nikolskaya ED, Yabbarov NG, Chirkina MV, Sokol MB, Mollaeva MR, Yurina LV, Vasilyeva AD, Rosenfeld MA, Obydennyi SI, Chabin IA, Popov AA. Electrospinning of biomimetic materials with fibrinogen for effective early-stage wound healing. Int J Biol Macromol 2024; 260:129514. [PMID: 38237825 DOI: 10.1016/j.ijbiomac.2024.129514] [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: 11/17/2023] [Revised: 01/01/2024] [Accepted: 01/13/2024] [Indexed: 01/28/2024]
Abstract
Electrospun biomimetic materials based on polyester of natural origin poly-3-hudroxybutyrate (PHB) modified with hemin (Hmi) and fibrinogen (Fbg) represent a great interest and are potentially applicable in various fields. Here, we describe formulation of the new fibrous PHB-Fbg and PHB-Hmi-Fbg materials with complex structure for biomedical application. The average diameter of the fibers was 3.5 μm and 1.8 μm respectively. Hmi presence increased porosity from 80 % to 94 %, significantly reduced the number of defects, ensured the formation of a larger number of open pores, and improved mechanical properties. Hmi presence significantly improved the molding properties of the material. Hmi facilitated effective Fbg adsorption on the of the PHB wound-healing material, ensuring uniform localization of the protein on the surface of the fibers. Next, we evaluated cytocompatibility, cell behavior, and open wound healing in mice. The results demonstrated that PHB-Fbg and PHB-Hmi-Fbg electrospun materials had pronounced properties and may be promising for early-stage wound healing - the PHB-Hmi-Fbg sample accelerated wound closure by 35 % on the 3rd day, and PHB-Hmi showed 45 % more effective wound closure on the 15th day.
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Affiliation(s)
- Polina M Tyubaeva
- Plekhanov University of Economics, Stremyanny per. 36, Moscow 117997, Russian Federation; Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina st. 4, Moscow 119334, Russian Federation.
| | - Ivetta A Varyan
- Plekhanov University of Economics, Stremyanny per. 36, Moscow 117997, Russian Federation; Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina st. 4, Moscow 119334, Russian Federation
| | - Elena D Nikolskaya
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina st. 4, Moscow 119334, Russian Federation
| | - Nikita G Yabbarov
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina st. 4, Moscow 119334, Russian Federation
| | - Margarita V Chirkina
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina st. 4, Moscow 119334, Russian Federation
| | - Maria B Sokol
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina st. 4, Moscow 119334, Russian Federation
| | - Mariia R Mollaeva
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina st. 4, Moscow 119334, Russian Federation
| | - Lyubov V Yurina
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina st. 4, Moscow 119334, Russian Federation
| | - Alexandra D Vasilyeva
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina st. 4, Moscow 119334, Russian Federation
| | - Mark A Rosenfeld
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina st. 4, Moscow 119334, Russian Federation
| | - Sergei I Obydennyi
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Healthcare of the Russian Federation, Moscow, Russian Federation; Centre for Theoretical Problems of Physicochemical Pharmacology, Moscow, Russian Federation
| | - Ivan A Chabin
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Healthcare of the Russian Federation, Moscow, Russian Federation; Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russian Federation
| | - Anatoly A Popov
- Plekhanov University of Economics, Stremyanny per. 36, Moscow 117997, Russian Federation; Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina st. 4, Moscow 119334, Russian Federation
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Shakhov PV, Tikhonowski GV, Popov AA, Iliasov AR, Petrunya DS, Lebedev AA, Klimentov SM, Zavestovskaya IN, Kabashin AV. Cytotoxicity of Laser-Synthesized Nanoparticles of Elemental Bismuth. Bull Exp Biol Med 2024; 176:501-504. [PMID: 38491259 DOI: 10.1007/s10517-024-06055-6] [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: 07/20/2023] [Indexed: 03/18/2024]
Abstract
High X-ray absorption combined with photothermal properties make bismuth nanoparticles (Bi NP) a promising agent for multimodal cancer theranostics. However, the synthesis of Bi NP by the "classical" chemical methods has numerous limitations, including potential toxicity of the produced nanomaterials. Here we studied in vitro toxicity of laser-synthesized Bi NP coated with Pluronic F-127 on mouse fibroblast cell line L929. The survival of L929 cells decreased linearly with increasing the concentration of Bi NP in a concentration range of 3-500 μg/ml; the LC50 value was 57 μg/ml. The unique combination of functional properties and moderate toxicity of the laser-synthesized Bi NP makes them a new promising platform for sensitization of multimodal cancer theranostics.
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Affiliation(s)
- P V Shakhov
- National Research Nuclear University MEPhI, Moscow, Russia.
| | | | - A A Popov
- National Research Nuclear University MEPhI, Moscow, Russia
| | - A R Iliasov
- National Research Nuclear University MEPhI, Moscow, Russia
| | - D S Petrunya
- P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
| | - A A Lebedev
- National Research Nuclear University MEPhI, Moscow, Russia
| | - S M Klimentov
- National Research Nuclear University MEPhI, Moscow, Russia
| | - I N Zavestovskaya
- P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
| | - A V Kabashin
- LP3 Laboratory, Aix-Marseille University, CNRS, Marseille, France
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Karpova SG, Olkhov AA, Varyan IA, Shilkina NG, Berlin AA, Popov AA, Iordanskii AL. Biocomposites Based on Electrospun Fibers of Poly(3-hydroxybutyrate) and Nanoplatelets of Graphene Oxide: Thermal Characteristics and Segmental Dynamics at Hydrothermal and Ozonation Impact. Polymers (Basel) 2023; 15:4171. [PMID: 37896415 PMCID: PMC10610569 DOI: 10.3390/polym15204171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/05/2023] [Accepted: 10/08/2023] [Indexed: 10/29/2023] Open
Abstract
In order to create new biodegradable nanocomposites for biomedicine, packaging, and environmentally effective adsorbents, ultra-thin composite fibers consisting of poly(3-hydroxybutyrate) (PHB) and graphene oxide (GO) were obtained by electrospinning. Comprehensive studies of ultrathin fibers combining thermal characteristics, dynamic electron paramagnetic resonance (ESR) probe measurements, and scanning electron microscopy (SEM) were carried out. It is shown that at the addition of 0.05, 0.1, 0.3, and 1% OG, the morphology and geometry of the fibers and their thermal and dynamic characteristics depend on the composite content. The features of the crystalline and amorphous structure of the PHB fibers were investigated by the ESR and DSC methods. For all compositions of PHB/GO, a nonlinear dependence of the correlation time of molecular mobility TEMPO probe (τ) and enthalpy of biopolyether melting (ΔH) is observed. The influence of external factors on the structural-dynamic properties of the composite fiber, such as hydrothermal exposure of samples in aqueous medium at 70 °C and ozonolysis, leads to extreme dependencies of τ and ΔH, which reflect two processes affecting the structure in opposite ways. The plasticizing effect of water leads to thermal destruction of the orientation of the pass-through chains in the amorphous regions of PHB and a subsequent decrease in the crystalline phase, and the aggregation of GO nanoplates into associates, reducing the number of GO-macromolecule contacts, thus increasing segmental mobility, as confirmed by decreasing τ values. The obtained PHB/GO fibrillar composites should find application in the future for the creation of new therapeutic and packaging systems with improved biocompatibility and high-barrier properties.
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Affiliation(s)
- Svetlana G. Karpova
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia; (S.G.K.); (A.A.O.); (A.A.P.)
| | - Anatoly A. Olkhov
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia; (S.G.K.); (A.A.O.); (A.A.P.)
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Lane, 117997 Moscow, Russia
| | - Ivetta A. Varyan
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia; (S.G.K.); (A.A.O.); (A.A.P.)
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Lane, 117997 Moscow, Russia
| | - Natalia G. Shilkina
- N. N. Semenov Federal Research Center for Chemical Physics Academy of Science, 119991 Moscow, Russia; (N.G.S.); (A.A.B.)
| | - Alexander A. Berlin
- N. N. Semenov Federal Research Center for Chemical Physics Academy of Science, 119991 Moscow, Russia; (N.G.S.); (A.A.B.)
| | - Anatoly A. Popov
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia; (S.G.K.); (A.A.O.); (A.A.P.)
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Lane, 117997 Moscow, Russia
| | - Alexey L. Iordanskii
- N. N. Semenov Federal Research Center for Chemical Physics Academy of Science, 119991 Moscow, Russia; (N.G.S.); (A.A.B.)
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Shelenkov PG, Pantyukhov PV, Poletto M, Popov AA. Influence of Vinyl Acetate Content and Melt Flow Index of Ethylene-Vinyl Acetate Copolymer on Physico-Mechanical and Physico-Chemical Properties of Highly Filled Biocomposites. Polymers (Basel) 2023; 15:2639. [PMID: 37376288 DOI: 10.3390/polym15122639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/07/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Highly filled biocomposites may be used as biodegradable masterbatches that manufacturers add to traditional polymers for making plastic goods more biodegradable. Biocomposites based on various trademarks of ethylene-vinyl acetate copolymer (EVA) and natural vegetable fillers (wood flour and microcrystalline cellulose) were studied. The EVA trademarks differed both in terms of the melt flow index and in the content of vinyl acetate groups. The composites were created as superconcentrates (or masterbatches) for the production of biodegradable materials based on vegetable fillers with polyolefin matrices. The filler content in biocomposites was 50, 60, 70 wt.%. The influence of the content of vinyl acetate in the copolymer and its melt flow index on the physico-mechanical and rheological properties of highly filled biocomposites was evaluated. As a result, one EVA trademark with high molecular weight that has a high content of VA was chosen because of its optimal parameters for creating highly filled composites with natural fillers.
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Affiliation(s)
- Pavel G Shelenkov
- Russian Academy of Sciences, Emanuel Institute of Biochemical Physics, Moscow 119334, Russia
| | - Petr V Pantyukhov
- Russian Academy of Sciences, Emanuel Institute of Biochemical Physics, Moscow 119334, Russia
- Scientific laboratory "Advanced Composite Materials and Technologies", Plekhanov Russian University of Economics, Moscow 117997, Russia
| | - Matheus Poletto
- Postgraduate Program in Engineering of Processes and Technologies (PGEPROTEC), University of Caxias do Sul (UCS), Caxias do Sul 95070-560, Brazil
| | - Anatoly A Popov
- Russian Academy of Sciences, Emanuel Institute of Biochemical Physics, Moscow 119334, Russia
- Scientific laboratory "Advanced Composite Materials and Technologies", Plekhanov Russian University of Economics, Moscow 117997, Russia
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Karpova SG, Olkhov AA, Varyan IA, Popov AA, Iordanskii AL. Effect of Drug Encapsulation and Hydrothermal Exposure on the Structure and Molecular Dynamics of the Binary System Poly(3-hydroxybutyrate)-chitosan. Polymers (Basel) 2023; 15:polym15102260. [PMID: 37242835 DOI: 10.3390/polym15102260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 05/03/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
In this work, film materials based on binary compositions of poly-(3-hydroxybutyrate) (PHB) and chitosan with different ratios of polymer components in the range from 0/100 to 100/0 wt. % were studied. Using a combination of thermal (DSC) and relaxation (EPR) measurements, the influence of the encapsulation temperature of the drug substance (DS) of dipyridamole (DPD) and moderately hot water (at 70 °C) on the characteristics of the PHB crystal structure and the diffusion rotational mobility of the stable TEMPO radical in the amorphous regions of the PHB/chitosan compositions is shown. The low-temperature extended maximum on the DSC endotherms made it possible to obtain additional information about the state of the chitosan hydrogen bond network. This allowed us to determine the enthalpies of thermal destruction of these bonds. In addition, it is shown that when PHB and chitosan are mixed, significant changes are observed in the degree of crystallinity of PHB, degree of destruction of hydrogen bonds in chitosan, segmental mobility, sorption capacity of the radical, and the activation energy of rotational diffusion in the amorphous regions of the PHB/chitosan composition. The characteristic point of polymer compositions was found to correspond to the ratio of the components of the mixture 50/50%, for which the inversion transition of PHB from dispersed material to dispersion medium is assumed. Encapsulation of DPD in the composition leads to higher crystallinity and to a decrease in the enthalpy of hydrogen bond breaking, and it also slows down segmental mobility. Exposure to an aqueous medium at 70 °C is also accompanied by sharp changes in the concentration of hydrogen bonds in chitosan, the degree of PHB crystallinity, and molecular dynamics. The conducted research made it possible for the first time to conduct a comprehensive analysis of the mechanism of action of a number of aggressive external factors (such as temperature, water, and the introduced additive in the form of a drug) on the structural and dynamic characteristics of the PHB/chitosan film material at the molecular level. These film materials have the potential to serve as a therapeutic system for controlled drug delivery.
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Affiliation(s)
- S G Karpova
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
| | - A A Olkhov
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Lane, 117997 Moscow, Russia
| | - I A Varyan
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Lane, 117997 Moscow, Russia
| | - A A Popov
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Lane, 117997 Moscow, Russia
| | - A L Iordanskii
- N. N. Semenov Federal Research Center for Chemical Physics Academy of Science, 119991 Moscow, Russia
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Tyubaeva PM, Varyan IA, Krivandin AV, Shatalova OV, Olkhov AA, Popov AA, Xu H, Arzhakova OV. Structure and Performance of All-Green Electrospun PHB-Based Membrane Fibrous Biomaterials Modified with Hemin. Membranes (Basel) 2023; 13:membranes13050478. [PMID: 37233539 DOI: 10.3390/membranes13050478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 04/17/2023] [Accepted: 04/19/2023] [Indexed: 05/27/2023]
Abstract
This work addresses the challenges concerning the development of "all-green" high-performance biodegradable membrane materials based on poly-3-hydroxybutyrate (PHB) and a natural biocompatible functional additive, iron-containing porphyrin, Hemin (Hmi) via modification and surface functionalization. A new facile and versatile approach based on electrospinning (ES) is advanced when modification of the PHB membranes is performed by the addition of low concentrations of Hmi (from 1 to 5 wt.%). Structure and performance of the resultant {HB/Hmi membranes were studied by diverse physicochemical methods, including differential scanning calorimetry, X-ray analysis, scanning electron microscopy, etc. Modification of the PHB fibrous membranes with Hmi allows control over their quality, supramolecular structure, morphology, and surface wettability. As a result of this modification, air and liquid permeability of the modified electrospun materials markedly increases. The proposed approach provides preparation of high-performance all-green membranes with tailored structure and performance for diverse practical applications, including wound healing, comfort textiles, facial protective masks, tissue engineering, water and air purification, etc.
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Affiliation(s)
- Polina M Tyubaeva
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny per., Moscow 117997, Russia
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, Moscow 119334, Russia
| | - Ivetta A Varyan
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny per., Moscow 117997, Russia
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, Moscow 119334, Russia
| | - Alexey V Krivandin
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, Moscow 119334, Russia
| | - Olga V Shatalova
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, Moscow 119334, Russia
| | - Anatoly A Olkhov
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny per., Moscow 117997, Russia
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, Moscow 119334, Russia
| | - Anatoly A Popov
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny per., Moscow 117997, Russia
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, Moscow 119334, Russia
| | - Huaizhong Xu
- Department of Biobased Materials Science, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Olga V Arzhakova
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow 119991, Russia
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Karpova SG, Varyan IA, Olkhov AA, Tyubaeva PM, Popov AA. Correction: Karpova et al. A Feature of the Crystalline and Amorphous Structure of Ultra Thin Fibers Based on Poly(3-hydroxybutyrate) (PHB) Containing Minor Concentrations of Hemin and a Complex of Tetraphenylporphyrin with Iron. Polymers 2022, 14, 4055. Polymers (Basel) 2023; 15:polym15092029. [PMID: 37177380 PMCID: PMC10180574 DOI: 10.3390/polym15092029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 04/12/2023] [Indexed: 05/15/2023] Open
Abstract
Addition of an Author [...].
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Affiliation(s)
- Svetlana G Karpova
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
| | - Ivetta A Varyan
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Lane, 117997 Moscow, Russia
| | - Anatoly A Olkhov
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Lane, 117997 Moscow, Russia
| | - Polina M Tyubaeva
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Lane, 117997 Moscow, Russia
| | - Anatoly A Popov
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Lane, 117997 Moscow, Russia
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Gasparyan KG, Tyubaeva PM, Varyan IA, Vetcher AA, Popov AA. Assessing the Biodegradability of PHB-Based Materials with Different Surface Areas: A Comparative Study on Soil Exposure of Films and Electrospun Materials. Polymers (Basel) 2023; 15:polym15092042. [PMID: 37177186 PMCID: PMC10181107 DOI: 10.3390/polym15092042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/21/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023] Open
Abstract
Due to the current environmental situation, biopolymers are replacing the usual synthetic polymers, and special attention is being paid to poly-3-hydroxybutyrate (PHB), which is a biodegradable polymer of natural origin. In this paper, the rate of biodegradation of films and fibers based on PHB was compared. The influence of exposure to soil on the structure and properties of materials was evaluated using methods of mechanical analysis, the DSC method and FTIR spectroscopy. The results showed rapid decomposition of the fibrous material and also showed how the surface of the material affects the rate of biodegradation and the mechanical properties of the material. It was found that maximum strength decreased by 91% in the fibrous material and by 49% in the film. Additionally, the DSC method showed that the crystallinity of the fiber after exposure to the soil decreased. It was established that the rate of degradation is influenced by different factors, including the surface area of the material and its susceptibility to soil microorganisms. The results obtained are of great importance for planning the structure of features in the manufacture of biopolymer consumer products in areas such as medicine, packaging, filters, protective layers and coatings, etc. Therefore, an understanding of the biodegradation mechanisms of PHB could lead to the development of effective medical devices, packaging materials and different objects with a short working lifespan.
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Affiliation(s)
- Kristina G Gasparyan
- Department of Physical Chemistry of Synthetic and Natural Polymer Compositions, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
| | - Polina M Tyubaeva
- Department of Physical Chemistry of Synthetic and Natural Polymer Compositions, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Per., 117997 Moscow, Russia
| | - Ivetta A Varyan
- Department of Physical Chemistry of Synthetic and Natural Polymer Compositions, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Per., 117997 Moscow, Russia
| | - Alexandre A Vetcher
- Complementary and Integrative Health Clinic of Dr. Shishonin, 5 Yasnogorskaya Str., 117588 Moscow, Russia
- Institute of Biochemical Technology and Nanotechnology, Peoples' Friendship University of Russia (RUDN), 6 Miklukho-Maklaya St., 117198 Moscow, Russia
| | - Anatoly A Popov
- Department of Physical Chemistry of Synthetic and Natural Polymer Compositions, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Per., 117997 Moscow, Russia
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10
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Tyubaeva PM, Varyan IA, Nikolskaya ED, Mollaeva MR, Yabbarov NG, Sokol MB, Chirkina MV, Popov AA. Biocompatibility and Antimicrobial Activity of Electrospun Fibrous Materials Based on PHB and Modified with Hemin. Nanomaterials (Basel) 2023; 13:nano13020236. [PMID: 36677989 PMCID: PMC9861043 DOI: 10.3390/nano13020236] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 12/30/2022] [Accepted: 01/01/2023] [Indexed: 05/31/2023]
Abstract
The effect of the hemin (Hmi) on the structure and properties of nanocomposite electrospun materials based on poly-3-hydroxybutyrate (PHB) is discussed in the article. The additive significantly affected the morphology of fibers allowed to produce more elastic material and provided high antimicrobial activity. The article considers also the impact of the hemin on the biocompatibility of the nonwoven material based on PHB and the prospects for wound healing.
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Affiliation(s)
- Polina M. Tyubaeva
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Per., 117997 Moscow, Russia
| | - Ivetta A. Varyan
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Per., 117997 Moscow, Russia
| | - Elena D. Nikolskaya
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
| | - Mariia R. Mollaeva
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
| | - Nikita G. Yabbarov
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
| | - Maria B. Sokol
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
| | - Margarita V. Chirkina
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
| | - Anatoly A. Popov
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny Per., 117997 Moscow, Russia
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11
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Popov AA, Mamedova SG, Belousov MD. [ICG technologies in surgical treatment of benign diseases in gynecology]. Khirurgiia (Mosk) 2023:54-57. [PMID: 37682547 DOI: 10.17116/hirurgia202309254] [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: 09/09/2023]
Abstract
ICG (indocyanine green) angiography is a method of visualizing blood flow and tissue perfusion based on intravenous administration of ICG and assessment of vascular distribution through an infrared fluorescence camera. Since the advent of ICG as a near-infrared fluorophore, fluorescence imaging has become an important tool in many areas of surgery. Several options for ICG angiography have been recently proposed in surgical gynecology. The authors describe application of ICG including assessment of myometrial and endometrial perfusion in myomectomy or resection of adenomyosis, tissue perfusion in surgical treatment of endometriosis, blood flow in hard-to-reach places in laparoscopic procedures and reconstructive surgery. ICG was useful in laparoscopic management of some benign gynecological diseases. In particular, this technology can improve treatment of endometriosis, especially deep infiltrative endometriosis, benign neoplasms.
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Affiliation(s)
- A A Popov
- Moscow Regional Research Institute of Obstetrics and Gynecology, Moscow, Russia
| | - S G Mamedova
- Moscow Regional Research Institute of Obstetrics and Gynecology, Moscow, Russia
| | - M D Belousov
- Moscow Regional Research Institute of Obstetrics and Gynecology, Moscow, Russia
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12
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Karpova SG, Varyan IA, Olkhov AA, Popov AA. A Feature of the Crystalline and Amorphous Structure of Ultra Thin Fibers Based on Poly(3-hydroxybutyrate) (PHB) Containing Minor Concentrations of Hemin and a Complex of Tetraphenylporphyrin with Iron. Polymers (Basel) 2022; 14:polym14194055. [PMID: 36236003 PMCID: PMC9572537 DOI: 10.3390/polym14194055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/17/2022] [Accepted: 09/23/2022] [Indexed: 11/16/2022] Open
Abstract
Comprehensive studies combining X-ray diffraction analysis, thermophysical, dynamic measurements by probe method and scanning electron microscopy have been carried out. The peculiarity of the crystalline and amorphous structure of ultra-thin fibers based on poly(3-hydroxybutyrate) (PHB) containing minor concentrations (0–5%) of a gene and a tetraphenylporphyrin (TFP) complex with iron (in the form of FeCl) are considered. When these complexes are added to the PHB fibers, the morphology of the fibers change: a sharp change in the crystallinity and molecular mobility in the amorphous regions of PHB is observed. When adding a gel to the fibers of PHB, a significant decrease in the degree of crystallinity, melting enthalpy, and correlation time can be observed. The reverse pattern is observed in a system with the addition of FeCl-TFP—there is a significant increase in the degree of crystallinity, melting enthalpy and correlation time. Exposure of PHB fibers with gemin in an aqueous medium at 70 °C leads to a decrease in the enthalpy of melting in modified fibers—to an increase in this parameter. The molecular mobility of chains in amorphous regions of PHB/gemin fibers increases at the same time, a nonlinear dependence of changes in molecular dynamics is observed in PHB/FeCl-TFP fibers. Ozonolysis has a complex effect on the amorphous structure of the studied systems. The obtained fibrous materials have bactericidal properties and should be used in the creation of new therapeutic systems of antibacterial and antitumor action.
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Affiliation(s)
- Svetlana G. Karpova
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Correspondence:
| | - Ivetta A. Varyan
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny lane, 117997 Moscow, Russia
| | - Anatoly A. Olkhov
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny lane, 117997 Moscow, Russia
| | - Anatoly A. Popov
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygina Street, 119334 Moscow, Russia
- Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 36 Stremyanny lane, 117997 Moscow, Russia
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13
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Fomenko OY, Shelygin YA, Nikityuk DB, Morozov SV, Bashankaev BN, Poryadin GV, Martynov MY, Morozov DA, Apolihina IA, Teterina TA, Dreval ON, Chagava DA, Salmasi ZM, Nikitin SS, Katunina EA, Kasyan GR, Gvozdev MY, Troshina EM, Kopachka MM, Kulikov AG, Turova EA, Romanov DV, Shkoda AS, Reutova AA, Rumiantsev AS, Fomenko ES, Popov AA, Fedorov AA, Komancev VN, Ekusheva EV, Vojtenkov VB, Nikolaev SG, Groshilin VS, Genov PG, Romih VV, Zaharchenko AV, Shornikov PV, Sinkin MV, Dilanyan OE, Isagulyan ED, Markaryan DR, Gluhov EY, Kiselev VN, Malinina OY, Marchenko VA, Silant'eva ES, Pimenova ES, Borodulina IV, Kanaev SP, Kan'shina DS, Kashnikov VN, Aleshin DV, Belousova SV, Nekrasov MA, Achkasov SI. [Questionnaire of the Ryzhikh National Medical Research Centre for Coloproctology is a new tool for assessing chronic pelvic pain and pelvic organ dysfunction]. Khirurgiia (Mosk) 2022:6-25. [PMID: 36562669 DOI: 10.17116/hirurgia20221226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The article presents the work of a multidisciplinary team of experts from various fields of medicine to optimize the «Questionnaire for assessing chronic pelvic pain and pelvic organ dysfunction (QCPPD) of the Ryzhikh National Medical Research Centre for Coloproctology» for use in clinical practice. The survey of respondents was conducted from June 28 to September 28, 2021. As a result of this survey, by repeatedly making edits and clarifications during communication with respondents, the final version was obtained, which allows assessing the patient's subjective sensations by the nature and localization of pelvic pain, sensitivity disorders and pelvic organ function. The main objective of this Questionnaire is to differentiate patients with neurogenic pain from a huge number of patients with chronic pelvic pain. This aspect will allow a more targeted approach to the diagnosis and pathogenetically justified treatment of patients, including after appropriate instrumental examinations. The work of a multidisciplinary team implies a higher degree of objectification and terminological accuracy of the Questionnaire under discussion. The presented version of the «Questionnaire for assessing chronic pelvic pain and pelvic organ dysfunction (QCPPD) of the Ryzhikh National Medical Research Centre for Coloproctology» will be primarily used in coloproctological patients with pelvic pain problems and anal incontinence and obstructive defecation. Further studies will be directed to the clinical evaluation of the results of the work carried out.
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Affiliation(s)
- O Yu Fomenko
- Ryzhikh National Medical Research Centre for Coloproctology, Moscow, Russia
| | - Yu A Shelygin
- Ryzhikh National Medical Research Centre for Coloproctology, Moscow, Russia
| | - D B Nikityuk
- Federal Research Center of Nutrition and Biotechnology, Moscow, Russia
| | - S V Morozov
- Federal Research Center of Nutrition and Biotechnology, Moscow, Russia
| | - B N Bashankaev
- A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - G V Poryadin
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - M Yu Martynov
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - D A Morozov
- Pirogov Russian National Research Medical University, Moscow, Russia.,Sechenov University, Moscow, Russia
| | - I A Apolihina
- Sechenov University, Moscow, Russia.,National medical research center for obstetrics, gynecology and perinatology named after academician V.I. Kulakov, Moscow, Russia
| | - T A Teterina
- National medical research center for obstetrics, gynecology and perinatology named after academician V.I. Kulakov, Moscow, Russia
| | - O N Dreval
- Russian Medical Academy of Continuous Professional Education, Moscow, Russia
| | - D A Chagava
- Russian Medical Academy of Continuous Professional Education, Moscow, Russia.,Central Clinical Hospital of Civil Aviation, Moscow, Russia
| | - Zh M Salmasi
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - S S Nikitin
- Research Centre for Medical Genetics, Moscow, Russia
| | - E A Katunina
- Pirogov Russian National Research Medical University, Moscow, Russia.,PRCCID, Moscow, Russia
| | - G R Kasyan
- A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - M Yu Gvozdev
- A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - E M Troshina
- National Medical Research Center for Neurosurgery named after Academician N.N. Burdenko, Moscow, Russia
| | - M M Kopachka
- National Medical Research Center for Neurosurgery named after Academician N.N. Burdenko, Moscow, Russia
| | - A G Kulikov
- Moscow Centre for Research and Practice in Medical Rehabilitation, Restorative and Sports Medicine Moscow Health Department, Moscow, Russia
| | - E A Turova
- Moscow Centre for Research and Practice in Medical Rehabilitation, Restorative and Sports Medicine Moscow Health Department, Moscow, Russia
| | - D V Romanov
- Sechenov University, Moscow, Russia.,Mental Health Research Center, Moscow, Russia
| | - A S Shkoda
- City Hospital No 67 named after L.A. Vorokhobov, Moscow Health Department, Moscow, Russia
| | - A A Reutova
- City Hospital No 67 named after L.A. Vorokhobov, Moscow Health Department, Moscow, Russia
| | - A S Rumiantsev
- City Hospital No 67 named after L.A. Vorokhobov, Moscow Health Department, Moscow, Russia
| | - E S Fomenko
- City Hospital No 67 named after L.A. Vorokhobov, Moscow Health Department, Moscow, Russia
| | - A A Popov
- Moscow Regional Research Institute of Obstetrics and Gynecology, Moscow, Russia
| | - A A Fedorov
- Moscow Regional Research Institute of Obstetrics and Gynecology, Moscow, Russia
| | - V N Komancev
- Saint - Petersburg Postgraduate Institute of Medical experts, St. Petersburg, Russia
| | - E V Ekusheva
- PRCCID, Moscow, Russia.,Belgorod National Research University, Belgorod, Russia
| | | | | | - V S Groshilin
- Rostov State Medical Univercity, Rostov-on-Don, Russia
| | - P G Genov
- City HospitalNo 52, Moscow Health Department, Moscow, Russia
| | - V V Romih
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Moscow, Russia
| | - A V Zaharchenko
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Moscow, Russia
| | - P V Shornikov
- Research Institute - Regional clinical hospital No 1 named after Professor S.V. Ochapovskiy, Krasnodar, Russia
| | - M V Sinkin
- N.V. Sklifosovsky Research Institute for Emergency Medicine, Moscow, Russia
| | | | - E D Isagulyan
- National Medical Research Center for Neurosurgery named after Academician N.N. Burdenko, Moscow, Russia
| | - D R Markaryan
- Lomonosov Moscow State University - Medical Scientific and Educational Center, Moscow, Russia
| | - E Yu Gluhov
- Ural State Medical University, Ekaterinburg, Russia
| | - V N Kiselev
- The Nikiforov Russian Center of Emergency and Radiation Medicine, St. Petersburg, Russia
| | | | | | | | | | - I V Borodulina
- Russian Medical Academy of Continuous Professional Education, Moscow, Russia
| | - S P Kanaev
- City Hospital No 67 named after L.A. Vorokhobov, Moscow Health Department, Moscow, Russia
| | - D S Kan'shina
- Pirogov National Medical and Surgical Center, Moscow, Russia
| | - V N Kashnikov
- Ryzhikh National Medical Research Centre for Coloproctology, Moscow, Russia
| | - D V Aleshin
- Ryzhikh National Medical Research Centre for Coloproctology, Moscow, Russia
| | - S V Belousova
- Ryzhikh National Medical Research Centre for Coloproctology, Moscow, Russia
| | - M A Nekrasov
- Ryzhikh National Medical Research Centre for Coloproctology, Moscow, Russia
| | - S I Achkasov
- Ryzhikh National Medical Research Centre for Coloproctology, Moscow, Russia
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14
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Zykova AK, Pantyukhov PV, Mastalygina EE, Chaverri-Ramos C, Nikolaeva SG, Saavedra-Arias JJ, Popov AA, Wortman SE, Poletto M. Biocomposites of Low-Density Polyethylene Plus Wood Flour or Flax Straw: Biodegradation Kinetics across Three Environments. Polymers (Basel) 2021; 13:polym13132138. [PMID: 34209771 PMCID: PMC8271909 DOI: 10.3390/polym13132138] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/23/2021] [Accepted: 06/23/2021] [Indexed: 11/17/2022] Open
Abstract
The purpose of this study was to assess the potential for biocomposite films to biodegrade in diverse climatic environments. Biocomposite films based on polyethylene and 30 wt.% of two lignocellulosic fillers (wood flour or flax straw) of different size fractions were prepared and studied. The developed composite films were characterized by satisfactory mechanical properties that allows the use of these materials for various applications. The biodegradability was evaluated in soil across three environments: laboratory conditions, an open field in Russia, and an open field in Costa Rica. All the samples lost weight and tensile strength during biodegradation tests, which was associated with the physicochemical degradation of both the natural filler and the polymer matrix. The spectral density of the band at 1463 cm−1 related to CH2-groups in polyethylene chains decreased in the process of soil burial, which is evidence of polymer chain breakage with formation of CH3 end groups. The degradation rate of most biocomposites after 20 months of the soil assays was greatest in Costa Rica (20.8–30.9%), followed by laboratory conditions (16.0–23.3%), and lowest in Russia (13.2–22.0%). The biocomposites with flax straw were more prone to biodegradation than those with wood flour, which can be explained by the chemical composition of fillers and the shape of filler particles. As the size fraction of filler particles increased, the biodegradation rate increased. Large particles had higher bioavailability than small spherical ones, encapsulated by a polymer. The prepared biocomposites have potential as an ecofriendly replacement for traditional polyolefins, especially in warmer climates.
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Affiliation(s)
- Anna K. Zykova
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, Kosygina st. 4, 119334 Moscow, Russia; (A.K.Z.); (P.V.P.); (E.E.M.); (A.A.P.)
| | - Petr V. Pantyukhov
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, Kosygina st. 4, 119334 Moscow, Russia; (A.K.Z.); (P.V.P.); (E.E.M.); (A.A.P.)
- Laboratory “Advanced Composite Materials and Technologies”, Department of Innovative Materials and Technologies, Plekhanov Russian University of Economics, Stremyanny per. 36, 117997 Moscow, Russia
| | - Elena E. Mastalygina
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, Kosygina st. 4, 119334 Moscow, Russia; (A.K.Z.); (P.V.P.); (E.E.M.); (A.A.P.)
- Laboratory “Advanced Composite Materials and Technologies”, Department of Innovative Materials and Technologies, Plekhanov Russian University of Economics, Stremyanny per. 36, 117997 Moscow, Russia
| | - Christian Chaverri-Ramos
- Departamento de Física, Facultad de Ciencias Exactas y Naturales, Campus Omar Dengo, Universidad Nacional, Calle 9, Avenidas 0 y 1, 40101 Heredia, Costa Rica; (C.C.-R.); (S.G.N.); (J.J.S.-A.)
| | - Svetlana G. Nikolaeva
- Departamento de Física, Facultad de Ciencias Exactas y Naturales, Campus Omar Dengo, Universidad Nacional, Calle 9, Avenidas 0 y 1, 40101 Heredia, Costa Rica; (C.C.-R.); (S.G.N.); (J.J.S.-A.)
| | - Jose J. Saavedra-Arias
- Departamento de Física, Facultad de Ciencias Exactas y Naturales, Campus Omar Dengo, Universidad Nacional, Calle 9, Avenidas 0 y 1, 40101 Heredia, Costa Rica; (C.C.-R.); (S.G.N.); (J.J.S.-A.)
| | - Anatoly A. Popov
- Department of Biological and Chemical Physics of Polymers, Emanuel Institute of Biochemical Physics of Russian Academy of Sciences, Kosygina st. 4, 119334 Moscow, Russia; (A.K.Z.); (P.V.P.); (E.E.M.); (A.A.P.)
- Laboratory “Advanced Composite Materials and Technologies”, Department of Innovative Materials and Technologies, Plekhanov Russian University of Economics, Stremyanny per. 36, 117997 Moscow, Russia
| | - Sam E. Wortman
- Department of Agronomy and Horticulture, University of Nebraska–Lincoln, 279 Plant Sciences Hall, Lincoln, NE 68583-0915, USA;
| | - Matheus Poletto
- Postgraduate Program in Engineering of Processes and Technologies (PGEPROTEC), Exact Sciences and Engineering, Central Campus, University of Caxias do Sul (UCS), Caxias do Sul 95070-560, Brazil
- Correspondence:
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15
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Barinova IV, Voloshchuk IN, Fedorov AA, Puchkova NV, Buyanova SN, Chechneva MA, Popov AA, Kapitanova OV, Kondrikov NI. [Uterine adenosarcoma. Report of 5 cases and review of literature]. Arkh Patol 2021; 83:25-32. [PMID: 33822551 DOI: 10.17116/patol20218302125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Uterine adenosarcoma is an uncommon biphasic tumor with benign epithelial and malignant mesenchymal components, often presenting difficulties for morphological diagnosis. We describe 5 cases of adenosarcoma of the uterine corpus and cervix, and vaginal stump in patients aged 46-76 years. Clinical data, ultrasound results, morphological data, including immunohistochemical studies with antibodies to CD10, estrogen and progesterone receptors, desmin, smooth muscle actin, and Ki-67 are presented. Large polypoid mass of the epithelial-mesenchymal structure within the uterine cavity in women of peri - and postmenopausal age require the exclusion of malignancy of the mesenchymal component with searchig for diagnostic criteria - periglandular cuffing of the stromal cells and mitoses.
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Affiliation(s)
- I V Barinova
- Moscow Regional Research Institute of Obstetrics and Gynecology of the Ministry of Health of the Moscow Region, Moscow Region, Russia
| | - I N Voloshchuk
- Moscow Regional Research Institute of Obstetrics and Gynecology of the Ministry of Health of the Moscow Region, Moscow Region, Russia.,Russian Medical Academy of Continuous Professional Education of the Ministry of Health of Russia, Moscow, Russia
| | - A A Fedorov
- Moscow Regional Research Institute of Obstetrics and Gynecology of the Ministry of Health of the Moscow Region, Moscow Region, Russia
| | - N V Puchkova
- Moscow Regional Research Institute of Obstetrics and Gynecology of the Ministry of Health of the Moscow Region, Moscow Region, Russia
| | - S N Buyanova
- Moscow Regional Research Institute of Obstetrics and Gynecology of the Ministry of Health of the Moscow Region, Moscow Region, Russia
| | - M A Chechneva
- Moscow Regional Research Institute of Obstetrics and Gynecology of the Ministry of Health of the Moscow Region, Moscow Region, Russia
| | - A A Popov
- Moscow Regional Research Institute of Obstetrics and Gynecology of the Ministry of Health of the Moscow Region, Moscow Region, Russia
| | - O V Kapitanova
- Moscow Regional Research Institute of Obstetrics and Gynecology of the Ministry of Health of the Moscow Region, Moscow Region, Russia
| | - N I Kondrikov
- Moscow Regional Research Institute of Obstetrics and Gynecology of the Ministry of Health of the Moscow Region, Moscow Region, Russia
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16
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Lodygin AN, Rakhmanova EA, Popova EA, Batotsyrenov BV, Popov AA, Bolshakova MA, Rakhmanov RM. [Optimization of treatment of acute poisoning with severe psychodisleptics]. Zh Nevrol Psikhiatr Im S S Korsakova 2020; 120:60-65. [PMID: 33081448 DOI: 10.17116/jnevro202012009160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To increase the efficacy of acute poisoning with severe psychodisleptics. MATERIAL AND METHODS Fifty-two patients with acute psychoactive substance poisoning were studied. Patients of the main group (n=27) received cytoflavin infusion in combination with inhaled sedation with sevoflurane in addition to conventional therapy. The comparison group consisted of 25 patients who received conventional therapy. RESULTS AND CONCLUSION Augmentation of conventional therapy with cytoflavin in combination with inhaled sedation with sevoflurane, affecting various links in the pathogenesis of acute severe poisoning with psychodisleptics, made it possible to cope in a shorter time.
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Affiliation(s)
- A N Lodygin
- Dzhanelidze St. Petersburg research Institute of emergency medicine, St-Petersburg, Russia
| | - E A Rakhmanova
- Karpovich Krasnoyarsk Interdistrict clinical hospital of emergency medical care, Krasnoyarsk, Russia.,Voino-Yasenetsky Krasnoyarsk state medical University, Krasnoyarsk, Russia
| | - E A Popova
- Karpovich Krasnoyarsk Interdistrict clinical hospital of emergency medical care, Krasnoyarsk, Russia.,Voino-Yasenetsky Krasnoyarsk state medical University, Krasnoyarsk, Russia
| | - B V Batotsyrenov
- Dzhanelidze St. Petersburg research Institute of emergency medicine, St-Petersburg, Russia
| | - A A Popov
- Karpovich Krasnoyarsk Interdistrict clinical hospital of emergency medical care, Krasnoyarsk, Russia.,Voino-Yasenetsky Krasnoyarsk state medical University, Krasnoyarsk, Russia
| | - M A Bolshakova
- Karpovich Krasnoyarsk Interdistrict clinical hospital of emergency medical care, Krasnoyarsk, Russia.,Voino-Yasenetsky Krasnoyarsk state medical University, Krasnoyarsk, Russia
| | - R M Rakhmanov
- Karpovich Krasnoyarsk Interdistrict clinical hospital of emergency medical care, Krasnoyarsk, Russia.,Voino-Yasenetsky Krasnoyarsk state medical University, Krasnoyarsk, Russia
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17
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Borodina IE, Sablin IV, Popov AA, Ageev AN. [Takayusu Arteritis on the background of congenital vascular anomaly?]. Kardiologiia 2020; 60:688. [PMID: 32720626 DOI: 10.18087/cardio.2020.6.n688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 10/14/2019] [Indexed: 06/11/2023]
Abstract
The article described a female patient with high-grade arterial hypertension diagnosed at her young age. Congenital abdominal aortic hyperplasia and conformity with criteria for Takayasu arteritis were diagnosed at 10 years following the clinical manifestation.
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Affiliation(s)
- I E Borodina
- Urals State Medical University, Yekaterinburg, Russia Urals State Regional clinical hospital # 1, Yekaterinburg, Russia
| | - I V Sablin
- Urals State Regional clinical hospital # 1, Yekaterinburg, Russia
| | - A A Popov
- Urals State Medical University, Yekaterinburg, Russia
| | - A N Ageev
- Urals State Medical University, Yekaterinburg, Russia Urals State Regional clinical hospital # 1, Yekaterinburg, Russia
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18
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Beletskaya EA, Lukina EA, Uvarov MN, Popov AA, Kulik LV. Geminate recombination in organic photovoltaic blend PCDTBT/PC 71BM studied by out-of-phase electron spin echo spectroscopy. J Chem Phys 2020; 152:044706. [PMID: 32007084 DOI: 10.1063/1.5131855] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The key process in organic solar cell operation is charge separation under light illumination. Due to the low dielectric constant of organic materials, the Coulomb attraction energy within the interfacial charge-transfer state (CTS) is larger than the thermal energy. Understanding the mechanism of charge separation at the organic donor/acceptor interface still remains a challenge and requires knowledge of the CTS temporal evolution. To address this problem, the CTS in the benchmark photovoltaic blend PCDTBT/PC71BM was studied by the out-of-phase Electron Spin Echo (ESE). The protocol for determining the CTS geminate recombination rate for certain electron-hole distances was developed. Simulating the out-of-phase ESE trace for the CTS in the PCDTBT/PC71BM blend allows precise determination of the electron-hole distance distribution function and its evolution with the increase in the delay after the laser flash. Distances of charge separation up to 6 nm were detected upon thermalization at a temperature of 20 K. Assuming the exponential decay of the recombination rate, the attenuation factor β = 0.08 Å-1 is estimated for the PCDTBT/PC71BM blend. Such a low attenuation factor is probably caused by a high degree of hole delocalization along the PCDTBT chain.
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Affiliation(s)
- E A Beletskaya
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Institutskaya Str. 3, 630090 Novosibirsk, Russia
| | - E A Lukina
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Institutskaya Str. 3, 630090 Novosibirsk, Russia
| | - M N Uvarov
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Institutskaya Str. 3, 630090 Novosibirsk, Russia
| | - A A Popov
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Institutskaya Str. 3, 630090 Novosibirsk, Russia
| | - L V Kulik
- Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Institutskaya Str. 3, 630090 Novosibirsk, Russia
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Izmozherova NV, Popov AA, Bakhtin VM. [Efficacy and safety of anticoagulant treatment for non-valvular atrial fibrillation in multimorbid patients]. Kardiologiia 2019; 60:61-68. [PMID: 32345200 DOI: 10.18087/cardio.2020.2.n524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 06/11/2023]
Abstract
OBJECTIVE Assessment of the safety and efficacy of anticoagulant treatment in patients with nonvalvular atrial fibrillation (AF) in a multimorbidity setting. MATERIALS AND METHODS The cross-sectional study included 104 patients diagnosed with nonvalvular AF and followed in the medical facilities of Yekaterinburg. The subjects were interviewed, anthropometric measurements were made, and the risk of thromboembolic complications was evaluated using the CHA2DS2-VASc score. The Charlson multimorbidity index was calculated, and patients were divided into two groups: Group 1 with a low level of multimorbidity (not more than 5 points) and Group 2 with a high level of multimorbidity (6 points or more). The data are presented as a median and interquartile range (25%; 75%). RESULTS The study population included 40 males and 64 females. The median age was 71 (62.5; 80) years. The level of multimorbidity was estimated as 5 (3; 6) points. Group 1 included 64 patients, and Group 2 included 40 patients. Thirty-nine percent of the sample patients had a paroxysmal form of AF, 10% had a persistent form, and 51% had permanent AF. The group of patients with a high level of multimorbidity included more patients with permanent AF and fewer patients with paroxysmal AF as compared with a moderate level of multimorbidity (p<0.01). Anticoagulant treatment was indicated for 92 (88.5%) patients. It was administered to 70.7% of patients; 29.3% did not receive it. Among patients receiving anticoagulants, warfarin was administered to 18.5%, and new oral anticoagulants (NOACs) were administered to 81.5%. Complications were reported in 15.2% of anticoagulant treatment cases. Bleeding was reported in 21.7% of cases of warfarin administration and 12.5% of cases of NOAC treatment (p=0.32). The median number of risk factors for bleeding per patient was 5 (4; 5.5). The Charlson index and the total number of risk factors are significantly correlated (R=0.37, p<0.05). CONCLUSION In real-world clinical practice in Ekaterinburg, Russia, 7 of 10 patients with AF for whom anticoagulant treatment was indicated actually received it; NOACs are prescribed four times more often than warfarin. With a higher level of multimorbidity, the risk of bleeding under the pressure of anticoagulant treatment increases; thus, NOACs should be preferred over warfarin for treatment of multimorbid patients.
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Affiliation(s)
| | - A A Popov
- Ural State Medical University, Ekaterinburg
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20
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Schlesier C, Liu F, Dubrovin V, Spree L, Büchner B, Avdoshenko SM, Popov AA. Mixed dysprosium-lanthanide nitride clusterfullerenes DyM 2N@C 80-I h and Dy 2MN@C 80-I h (M = Gd, Er, Tm, and Lu): synthesis, molecular structure, and quantum motion of the endohedral nitrogen atom. Nanoscale 2019; 11:13139-13153. [PMID: 31268459 DOI: 10.1039/c9nr03593a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Systematic exploration of the synthesis of mixed-metal Dy-M nitride clusterfullerenes (NCFs, M = Gd, Er, Tm, Lu) is performed, and the impact of the second metal on the relative yield is evaluated. We demonstrate that the ionic radius of the metal appears to be the main factor allowing explanation of the relative yields in Dy-M mixed-metal systems with M = Sc, Lu, Er, and Gd. At the same time, Dy-Tm NCFs show anomalously low yields, which is not consistent with the relatively small ionic radius of Tm3+ but can be explained by the high third ionization potential of Tm. Complete separation of Dy-Gd and Dy-Er, as well as partial separation of Dy-Lu M3N@C80 nitride clusterfullerenes, is accomplished by recycling HPLC. The molecular structures of DyGd2N@C80 and DyEr2N@C80 are analyzed by means of single-crystal X-ray diffraction. A remarkable ordering of mixed-metal nitride clusters is found despite similar size and electronic properties of the metals. Possible pyramidalization of the nitride clusters in these and other nitride clusterfullerenes is critically analyzed with the help of DFT calculations and reconstruction of the nitrogen inversion barrier in M3N@C80 molecules is performed. Although a double-well potential with a pyramidal cluster structure is found to be common for most of them, the small size of the inversion barrier often leads to an apparent planar structure of the cluster. This situation is found for those M3N@C80 molecules in which the energy of the lowest vibrational level exceeds that of the inversion barrier, including Dy3N@C80 and DyEr2N@C80. The genuine pyramidal structure can be observed by X-ray diffraction only when the lowest vibrational level is below the inversion barrier, such as those found in Gd3N@C80 and DyGd2N@C80. The quantum nature of molecular vibrations becomes especially apparent when the size of the inversion barrier is comparable to the energy of the lowest vibrational levels.
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Affiliation(s)
- C Schlesier
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany.
| | - F Liu
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany.
| | - V Dubrovin
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany.
| | - L Spree
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany.
| | - B Büchner
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany.
| | - S M Avdoshenko
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany.
| | - A A Popov
- Leibniz Institute for Solid State and Materials Research (IFW Dresden), Helmholtzstrasse 20, 01069 Dresden, Germany.
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21
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Fadeyev FA, Khrunyk YY, Belikov SV, Lugovets DV, Gubaeva OV, Karabanalov MS, Leontyev SL, Popov AA. The Adhesion of Human Dermal Fibroblasts on Anodized Nanotube-layered Titanium, Modified for Implantology Application. Dokl Biol Sci 2019; 486:91-93. [PMID: 31317453 DOI: 10.1134/s0012496619030013] [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] [Received: 12/19/2018] [Revised: 12/19/2018] [Accepted: 12/19/2018] [Indexed: 11/23/2022]
Abstract
Anodization of titanium implants is accompanied by the formation of titanium oxide nanotubes improving osseointegration. An excessive fibroblast adhesion on the surface might lead to the formation of fibrous capsule resulting in implant rejection. In our research, we demonstrated that the adhesion activity of human dermal fibroblasts on anodized surface was not elevated, which is promising for the use of titanium with nanotube-layered surface for implantology.
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Affiliation(s)
- F A Fadeyev
- Institute of Medical Cell Technologies, 620026, Yekaterinburg, Russia
| | - Yu Ya Khrunyk
- Ural Federal University Named after the first President of Russia B.N. Yeltsin, 620002, Yekaterinburg, Russia. .,Institute of High Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, 620137, Yekaterinburg, Russia.
| | - S V Belikov
- Ural Federal University Named after the first President of Russia B.N. Yeltsin, 620002, Yekaterinburg, Russia
| | - D V Lugovets
- Institute of Medical Cell Technologies, 620026, Yekaterinburg, Russia
| | - O V Gubaeva
- Institute of Medical Cell Technologies, 620026, Yekaterinburg, Russia
| | - M S Karabanalov
- Ural Federal University Named after the first President of Russia B.N. Yeltsin, 620002, Yekaterinburg, Russia
| | - S L Leontyev
- Institute of Medical Cell Technologies, 620026, Yekaterinburg, Russia
| | - A A Popov
- Ural Federal University Named after the first President of Russia B.N. Yeltsin, 620002, Yekaterinburg, Russia
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23
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Abstract
Takayasu's arteritis (TA) is a rare disease that can be overlooked during the first visit to a GP, rheumatologist, or any other medical specialist due to a variety of its symptoms. The aim of this study was to describe the clinical presentation and the course of patients with TA residing in the Middle Ural. A retrospective analysis was conducted using the medical records of 183 patients treated at the Sverdlovsk Regional Clinical Hospital 1 from 1979 through 2018. The male to female ratio was 1:3. The mean age was 33.5 years for women and 35.2 for men. The most frequently involved arteries were subclavian (101 cases; 55%), carotid (98 cases; 53%) and renal (77 cases; 42%). Type V was the most common angiographic type. Arterial stenosis was present in 94 (51%) patients. Sixty-six patients received surgical interventions. Of all patients included in the analysis, 31 died. The observed 5-year survival was 92%, 10-year survival, 90% and 15-year survival, 80%. Seventy-two patients (39%) developed major adverse cardiovascular events (MACE), including myocardial infarction, ischemic stroke, and thrombosis of large arteries/veins. The clinical presentation of TA may vary in different geographical regions.
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Affiliation(s)
- IE Borodina
- Sverdlovsk Regional Clinical Hospital No.1, Yekaterinburg, Russia; Ural State Medical University of the Ministry of health, Yekaterinburg, Russia
| | - AA Popov
- Ural State Medical University of the Ministry of health, Yekaterinburg, Russia
| | - GG Salavatova
- Sverdlovsk Regional Clinical Hospital No.1, Yekaterinburg, Russia
| | - LA Shardina
- Ural State Medical University of the Ministry of health, Yekaterinburg, Russia
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24
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Petriev VM, Tischenko VK, Mikhailovskaya AA, Popov AA, Tselikov G, Zelepukin I, Deyev SM, Kaprin AD, Ivanov S, Timoshenko VY, Prasad PN, Zavestovskaya IN, Kabashin AV. Nuclear nanomedicine using Si nanoparticles as safe and effective carriers of 188Re radionuclide for cancer therapy. Sci Rep 2019; 9:2017. [PMID: 30765778 PMCID: PMC6376125 DOI: 10.1038/s41598-018-38474-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 11/19/2018] [Indexed: 11/25/2022] Open
Abstract
Nuclear nanomedicine, with its targeting ability and heavily loading capacity, along with its enhanced retention to avoid rapid clearance as faced with molecular radiopharmaceuticals, provides unique opportunities to treat tumors and metastasis. Despite these promises, this field has seen limited activities, primarily because of a lack of suitable nanocarriers, which are safe, excretable and have favorable pharmacokinetics to efficiently deliver and retain radionuclides in a tumor. Here, we introduce biodegradable laser-synthesized Si nanoparticles having round shape, controllable low-dispersion size, and being free of any toxic impurities, as highly suitable carriers of therapeutic 188Re radionuclide. The conjugation of the polyethylene glycol-coated Si nanoparticles with radioactive 188Re takes merely 1 hour, compared to its half-life of 17 hours. When intravenously administered in a Wistar rat model, the conjugates demonstrate free circulation in the blood stream to reach all organs and target tumors, which is radically in contrast with that of the 188Re salt that mostly accumulates in the thyroid gland. We also show that the nanoparticles ensure excellent retention of 188Re in tumor, not possible with the salt, which enables one to maximize the therapeutic effect, as well as exhibit a complete time-delayed conjugate bioelimination. Finally, our tests on rat survival demonstrate excellent therapeutic effect (72% survival compared to 0% of the control group). Combined with a series of imaging and therapeutic functionalities based on unique intrinsic properties of Si nanoparticles, the proposed biodegradable complex promises a major advancement in nuclear nanomedicine.
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Affiliation(s)
- V M Petriev
- MEPhI, Institute of Engineering Physics for Biomedicine (PhysBio), 115409, Moscow, Russia
- National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - V K Tischenko
- National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - A A Mikhailovskaya
- National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - A A Popov
- Aix Marseille Univ, CNRS, LP3, Campus de Luminy - Case 917, 13288, Marseille, France
| | - G Tselikov
- Aix Marseille Univ, CNRS, LP3, Campus de Luminy - Case 917, 13288, Marseille, France
| | - I Zelepukin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya St, Moscow, 117997, Russia
| | - S M Deyev
- MEPhI, Institute of Engineering Physics for Biomedicine (PhysBio), 115409, Moscow, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklaya St, Moscow, 117997, Russia
- National Research Tomsk Polytechnic University, Tomsk, Russia
| | - A D Kaprin
- National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - S Ivanov
- National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, Obninsk, Russia
| | - V Yu Timoshenko
- MEPhI, Institute of Engineering Physics for Biomedicine (PhysBio), 115409, Moscow, Russia
- Lomonosov Moscow State University, Physics Department, Leninskie Gory 1, 119991, Moscow, Russia
| | - P N Prasad
- MEPhI, Institute of Engineering Physics for Biomedicine (PhysBio), 115409, Moscow, Russia.
- Department of Chemistry and Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, The State University of New York, Buffalo, New York, 14260, United States.
| | - I N Zavestovskaya
- MEPhI, Institute of Engineering Physics for Biomedicine (PhysBio), 115409, Moscow, Russia
| | - A V Kabashin
- MEPhI, Institute of Engineering Physics for Biomedicine (PhysBio), 115409, Moscow, Russia.
- Aix Marseille Univ, CNRS, LP3, Campus de Luminy - Case 917, 13288, Marseille, France.
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25
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Izmozherova N, Popov AA, Getmanova NA. P1865Non-steroid anti-inflammatory drug consumption decrease antihypertensive treatment efficacy in postenopausal women. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- N Izmozherova
- Urals State Medical University, Pharmacology and Clinical Pharmacology, Ekaterinburg, Russian Federation
| | - A A Popov
- Urals State Medical University, Hospital Therapy, Ekaterinburg, Russian Federation
| | - N A Getmanova
- Urals State Medical University, Pharmacology and Clinical Pharmacology, Ekaterinburg, Russian Federation
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26
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Chen CH, Krylov DS, Avdoshenko SM, Liu F, Spree L, Westerström R, Bulbucan C, Studniarek M, Dreiser J, Wolter AUB, Büchner B, Popov AA. Magnetic hysteresis in self-assembled monolayers of Dy-fullerene single molecule magnets on gold. Nanoscale 2018; 10:11287-11292. [PMID: 29882575 PMCID: PMC6018719 DOI: 10.1039/c8nr00511g] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 05/22/2018] [Indexed: 06/08/2023]
Abstract
Fullerene single molecule magnets (SMMs) DySc2N@C80 and Dy2ScN@C80 are functionalized via a 1,3-dipolar cycloaddition with surface-anchoring thioether groups. The SMM properties of Dy-fullerenes are substantially affected by the cycloaddition. Submonolayers of the physisorbed derivatives exhibit magnetic hysteresis on an Au(111) surface at 2 K as revealed by X-ray magnetic circular dichroism.
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Affiliation(s)
- C-H Chen
- Leibniz Institute for Solid State and Materials Research (IFW), D-01069 Dresden, Germany.
| | - D S Krylov
- Leibniz Institute for Solid State and Materials Research (IFW), D-01069 Dresden, Germany.
| | - S M Avdoshenko
- Leibniz Institute for Solid State and Materials Research (IFW), D-01069 Dresden, Germany.
| | - F Liu
- Leibniz Institute for Solid State and Materials Research (IFW), D-01069 Dresden, Germany.
| | - L Spree
- Leibniz Institute for Solid State and Materials Research (IFW), D-01069 Dresden, Germany.
| | - R Westerström
- The Division of Synchrotron Radiation Research, Lund University, SE-22100 Lund, Sweden
| | - C Bulbucan
- The Division of Synchrotron Radiation Research, Lund University, SE-22100 Lund, Sweden
| | - M Studniarek
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - J Dreiser
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - A U B Wolter
- Leibniz Institute for Solid State and Materials Research (IFW), D-01069 Dresden, Germany.
| | - B Büchner
- Leibniz Institute for Solid State and Materials Research (IFW), D-01069 Dresden, Germany.
| | - A A Popov
- Leibniz Institute for Solid State and Materials Research (IFW), D-01069 Dresden, Germany.
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27
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Krylov DS, Liu F, Brandenburg A, Spree L, Bon V, Kaskel S, Wolter AUB, Büchner B, Avdoshenko SM, Popov AA. Magnetization relaxation in the single-ion magnet DySc 2N@C 80: quantum tunneling, magnetic dilution, and unconventional temperature dependence. Phys Chem Chem Phys 2018; 20:11656-11672. [PMID: 29671443 PMCID: PMC5933001 DOI: 10.1039/c8cp01608a] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Quantum tunneling and relaxation of magnetization in single molecule magnet DySc2N@C80 is thoroughly studied as a function of magnetic dilution, temperature, and magnetic field.
Relaxation of magnetization in endohedral metallofullerenes DySc2N@C80 is studied at different temperatures, in different magnetic fields, and in different molecular arrangements. Magnetization behavior and relaxation are analyzed for powder sample, and for DySc2N@C80 diluted in non-magnetic fullerene Lu3N@C80, adsorbed in voids of a metal–organic framework, and dispersed in a polymer. The magnetic field dependence and zero-field relaxation are also studied for single-crystals of DySc2N@C80 co-crystallized with Ni(ii) octaethylporphyrin, as well as for the single crystal diluted with Lu3N@C80. Landau–Zener theory is applied to analyze quantum tunneling of magnetization in the crystals. The field dependence of relaxation rates revealed a dramatic dependence of the zero-field tunneling resonance width on the dilution and is explained with the help of an analysis of dipolar field distributions. AC magnetometry is used then to get access to the relaxation of magnetization in a broader temperature range, from 2 to 87 K. Finally, a theoretical framework describing the spin dynamics with dissipation is proposed to study magnetization relaxation phenomena in single molecule magnets.
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Affiliation(s)
- D S Krylov
- Leibniz Institute for Solid State and Materials Research, 01069 Dresden, Germany.
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28
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Velkos G, Krylov DS, Kirkpatrick K, Liu X, Spree L, Wolter AUB, Büchner B, Dorn HC, Popov AA. Giant exchange coupling and field-induced slow relaxation of magnetization in Gd 2@C 79N with a single-electron Gd-Gd bond. Chem Commun (Camb) 2018; 54:2902-2905. [PMID: 29497728 PMCID: PMC5885278 DOI: 10.1039/c8cc00112j] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 02/13/2018] [Indexed: 12/18/2022]
Abstract
Magnetic properties of the azafullerene Gd2@C79N are studied by SQUID magnetometry. The effective exchange coupling constant jGd,e between the Gd spins and the spin of unpaired electron residing on the single-electron Gd-Gd bond is determined to be 170 ± 10 cm-1. Low temperature AC measurements revealed field-induced millisecond-long relaxation of magnetization.
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Affiliation(s)
- G Velkos
- Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany.
| | - D S Krylov
- Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany.
| | - K Kirkpatrick
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - X Liu
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - L Spree
- Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany.
| | - A U B Wolter
- Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany.
| | - B Büchner
- Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany.
| | - H C Dorn
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA and Virginia Tech Carilion Research Institute, Roanoke, Virginia 24016, USA.
| | - A A Popov
- Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany.
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29
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Khrunyk YY, Vyalykh IV, Korelin AV, Belikov SV, Karabanalov MS, Rakitin SB, Kamalov RV, Popov AA. Isolation of primary osteoblast cell lines from adult rat and rat embryos and their use as models for in vitro biocompatibility tests of nanostructured titanium-based implants. Dokl Biol Sci 2017; 475:175-179. [PMID: 28861876 DOI: 10.1134/s0012496617040032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Indexed: 11/23/2022]
Abstract
Methods for obtaining osteoblast cultures from the calvaria of adult Wistar rats and 12-day-old embryos of these rats have been adapted for studying the biocompatibility and ossointegration of titanium-based implants. The osteoblast morphology and their differentiation into osteocytes on a titanium matrix with specially treated surface have been studied. It has been confirmed that two cultures of diploid rat cells obtained in the study can serve as efficient models for preclinical in vitro testing of nanostructured titanium implants for biocompatibility and osseointegration.
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Affiliation(s)
- Y Y Khrunyk
- Ural Federal University, Yekaterinburg, 620002, Russia. .,Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620144, Russia.
| | - I V Vyalykh
- Ural Scientific Research Veterinary Institute, Yekaterinburg, 620000, Russia
| | - A V Korelin
- Ural Federal University, Yekaterinburg, 620002, Russia
| | - S V Belikov
- Ural Federal University, Yekaterinburg, 620002, Russia
| | | | - S B Rakitin
- Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620144, Russia
| | - R V Kamalov
- Ural Federal University, Yekaterinburg, 620002, Russia
| | - A A Popov
- Ural Federal University, Yekaterinburg, 620002, Russia
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30
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Krylov DS, Liu F, Avdoshenko SM, Spree L, Weise B, Waske A, Wolter AUB, Büchner B, Popov AA. Record-high thermal barrier of the relaxation of magnetization in the nitride clusterfullerene Dy 2ScN@C 80-I h. Chem Commun (Camb) 2017; 53:7901-7904. [PMID: 28656179 PMCID: PMC5730045 DOI: 10.1039/c7cc03580b] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Dy-Sc nitride clusterfullerene Dy2ScN@C80-Ih exhibits slow relaxation of magnetization up to 76 K. Above 60 K, thermally-activated relaxation proceeds via the fifth-excited Kramers doublet with the energy of 1735 ± 21 K, which is the highest barrier ever reported for dinuclear lanthanide single molecule magnets.
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Affiliation(s)
- D S Krylov
- Leibniz Institute for Solid State and Materials Research, 01069 Dresden, Germany.
| | - F Liu
- Leibniz Institute for Solid State and Materials Research, 01069 Dresden, Germany.
| | - S M Avdoshenko
- Leibniz Institute for Solid State and Materials Research, 01069 Dresden, Germany.
| | - L Spree
- Leibniz Institute for Solid State and Materials Research, 01069 Dresden, Germany.
| | - B Weise
- Leibniz Institute for Solid State and Materials Research, 01069 Dresden, Germany.
| | - A Waske
- Leibniz Institute for Solid State and Materials Research, 01069 Dresden, Germany.
| | - A U B Wolter
- Leibniz Institute for Solid State and Materials Research, 01069 Dresden, Germany.
| | - B Büchner
- Leibniz Institute for Solid State and Materials Research, 01069 Dresden, Germany.
| | - A A Popov
- Leibniz Institute for Solid State and Materials Research, 01069 Dresden, Germany.
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Miroshnichenko YV, Goryachev AB, Popov AA, Rodionov EO. [Improvement of medical equipment setting for the hospital link of the medical service during wartime]. Voen Med Zh 2016; 337:43-46. [PMID: 27416721] [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
One of the priorities of the military health care is to improve the system of rationing medical equipment for the hospital unit of the medical service of the Armed Forces in wartime. This is determined the fact that the effectiveness of measures to provide military field hospitals with medical supplies depends on the quality of medical care for the wounded and sick, as well as the level of their return to duty. The article presents the characteristics of modern standards medical supplies procurement of military field hospitals included in the new regulatory legal act of the Russian Federation Ministry of Defence--"Standards of supplies medical supplies medical and pharmaceutical organizations (units) of the Russian Federation on the wartime armed forces", approved and put into effect in 2015 by order of the Minister of Defence of the Russian Federation.
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Makovskiy AA, Popov AA, Gysev SD, Barhatova LI. [ABO and RHD blood types distribution of the patients treated in the Federal Center of Cardiovascular Surgery of Krasnoyarsk]. Klin Med (Mosk) 2016; 94:353-355. [PMID: 30289646] [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 knowledge of blood types frequency in hospital patients helps to plan and perform transfusion therapy at blood donor centers. The distribution of patients’ blood by ABO groups and RhD allows to more efficiently organize and use donor blood banks. The risk of a disease is related to genome composition and is inherited with an ABO blood type. Every person should know his (her) ABO blood type and RhD to enable early identification of the first symptoms of an illness. Materials and methods. This work is based on the study of 4831 blood samples from patients treated at the Center of Cardiovascular Surgery in 2013 (2885 (59,7%) men of the mean age 55 years and 1946 (40,3 %) women of the mean age 57 years). Results. Type A blood occurred most frequently (1787 or 37,0% samples) followed by group O (1625 or 33,6% samples). Samples of group B made up 1025 of the total (21,2%), AB blood group was found in 394 samples (8,2%). Conclusion. The blood types distribution of the ABO system in the patients treated at the Center of Cardiovascular Surgery was characterized by the following pattern: A > O > B > AB. Group A was identified in 37,0% of the patients. Its frequency is similar to that in the population of the western part of Russia and Moscow but different from that in the people living in nearby regions. The frequency of RhD system antigens is comparable in all regions of Russia. CcDEe, ccDEe, CcDee, CCDee are considered to be the most widespread phenotypes. The residents of the Krasnoyarsk region and some nearby regions having blood type A apply to the Center of Cardiovascular Surgery with cardiovascular disorders more frequently than those with others ABO blood types.
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Miroshnichenko YV, Stavila AG, Goryachev AB, Kononov VN, Krasavin KD, Popov AA. [Implementation of modern approaches to medical equipment of medical service's troops]. Voen Med Zh 2015; 336:19-26. [PMID: 30590898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Implementation of modern approaches to medical equipment of medical service's troops. The authors give essential characteristics of modern approaches to equipment of medical small and large units and troops. It is shown that for medical evacuation under field conditions it is neccessary to use modern complete-basic equipment that allows effectively providing medical assistance to the wounded and sick, maintaining the established level of readiness of medical troops, unifying norms of medical equipping, operatively deploying organisational stages of medical evacuation, optimizing planning of medical equipment. Medical equipment in peacetime should be carried out on the basis of standards and orders of medical care delivery that ensures harmonization with requirements of public health.
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Popov AA, Sergeeva NS, Britaev TA, Komlev VS, Sviridova IK, Kirsanova VA, Akhmedova SA, Dgebuadze PY, Teterina AY, Kuvshinova EA, Schanskii YD. Some Physical, Chemical, and Biological Parameters of Samples of Scleractinium Coral Aquaculture Skeleton Used for Reconstruction/Engineering of the Bone Tissue. Bull Exp Biol Med 2015; 159:494-7. [PMID: 26388568 DOI: 10.1007/s10517-015-3001-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Indexed: 10/23/2022]
Abstract
Physical and chemical (phase and chemical composition, dynamics of resorption, and strength properties), and biological (cytological compatibility and scaffold properties of the surface) properties of samples of scleractinium coral skeletons from aquacultures of three types and corresponding samples of natural coral skeletons (Pocillopora verrucosa, Acropora formosa, and Acropora nobilis) were studied. Samples of scleractinium coral aquaculture skeleton of A. nobilis, A. formosa, and P. verrucosa met the requirements (all study parameters) to materials for osteoplasty and 3D-scaffolds for engineering of bone tissue.
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Affiliation(s)
- A A Popov
- N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - N S Sergeeva
- N. I. Pirogov Russian National Research Medical University, Ministry of Health of the Russian Federation, Moscow, Russia. .,P. A. Hertsen Moscow Research Cancer Centre, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - T A Britaev
- A. N. Severtsov Institute of Ecology and Evolution Problems, Moscow, Russia
| | - V S Komlev
- A. A. Baikov Institute of Metallurgy and Material Science, Russian Academy of Sciences, Moscow, Russia
| | - I K Sviridova
- P. A. Hertsen Moscow Research Cancer Centre, Ministry of Health of the Russian Federation, Moscow, Russia
| | - V A Kirsanova
- P. A. Hertsen Moscow Research Cancer Centre, Ministry of Health of the Russian Federation, Moscow, Russia
| | - S A Akhmedova
- P. A. Hertsen Moscow Research Cancer Centre, Ministry of Health of the Russian Federation, Moscow, Russia
| | - P Yu Dgebuadze
- A. N. Severtsov Institute of Ecology and Evolution Problems, Moscow, Russia
| | - A Yu Teterina
- A. A. Baikov Institute of Metallurgy and Material Science, Russian Academy of Sciences, Moscow, Russia
| | - E A Kuvshinova
- P. A. Hertsen Moscow Research Cancer Centre, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Ya D Schanskii
- P. A. Hertsen Moscow Research Cancer Centre, Ministry of Health of the Russian Federation, Moscow, Russia
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Popov AA, Maslova EM, Shestak EM, Yanenko VM. Towards the identification of vectorcardiograms plotted in two orthogonal systems of registration points. Adv Cardiol 2015; 16:237-9. [PMID: 775919 DOI: 10.1159/000398404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Svitova AL, Krupskaya Y, Samoylova N, Kraus R, Geck J, Dunsch L, Popov AA. Magnetic moments and exchange coupling in nitride clusterfullerenes Gd(x)Sc(3-x)N@C80 (x = 1-3). Dalton Trans 2015; 43:7387-90. [PMID: 24622767 DOI: 10.1039/c3dt53367k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The magnetic properties of nitride clusterfullerenes GdxSc3-xN@C80 (x = 1-3) are studied as a function of the number of Gd atoms in the cluster. The intracluster interaction of the Gd ions in Gd2ScN@C80 and Gd3N@C80 is ferromagnetic with exchange constants of -1.2 K ± 0.1 K and -0.6 K ± 0.1 K, respectively. At 2 K, the magnetization curves exhibit noticeable deviations from the Heisenberg model pointing to a non-negligible anisotropy.
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Affiliation(s)
- A L Svitova
- Leibniz-Institute for Solid State and Materials Research (IFW Dresden), D-01171 Dresden, Germany.
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Zhang Y, Krylov D, Rosenkranz M, Schiemenz S, Popov AA. Magnetic anisotropy of endohedral lanthanide ions: paramagnetic NMR study of MSc 2N@C 80- Ih with M running through the whole 4f row. Chem Sci 2015; 6:2328-2341. [PMID: 29308147 PMCID: PMC5645780 DOI: 10.1039/c5sc00154d] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 01/28/2015] [Indexed: 12/27/2022] Open
Abstract
Paramagnetic and variable temperature 13C and 45Sc nuclear magnetic resonance studies are performed for nitride clusterfullerenes MSc2N@C80 with icosahedral Ih(7) carbon cage, where M runs through all lanthanides forming nitride clusters. The influence of the endohedral lanthanide ions on the NMR spectral pattern is carefully followed, and dramatic differences are found in peak positions and line widths. Thus, 13C lines broaden from 0.01-0.02 ppm in diamagnetic MSc2N@C80 molecules (M = La, Y, Lu) to several ppm in TbSc2N@C80 and DySc2N@C80. Direction of the paramagnetic shift depends on the shape of the 4f electron density in corresponding lanthanide ions. In TmSc2N@C80 and ErSc2N@C80 with prolate 4f-density of lanthanide ions, 13C signals are shifted down-field, whereas 45Sc peaks are shifted up-field versus diamagnetic values. In all other MSc2N@C80 molecules lanthanide ions have oblate-shaped 4f electron density, and the lanthanide-induced shift is negative for 13C and positive for 45Sc peaks. Analysis of the pseudocontact and contact contributions to chemical shifts revealed that the pseudocontact term dominates both in 13C and 45Sc NMR spectra, although contact shifts for 13C signals are also considerable. Point charge computations of the ligand field splitting are performed to explain experimental results, and showed reasonable agreement with experimental pseudocontact shifts. Nitrogen atom bearing large negative charge and located close to the lanthanide ion results in large magnetic anisotropy of lanthanide ions in nitride clusterfullerenes with quasi-uniaxial ligand field.
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Affiliation(s)
- Y Zhang
- Leibniz Institute for Solid State and Materials Research , 01069 Dresden , Germany .
| | - D Krylov
- Leibniz Institute for Solid State and Materials Research , 01069 Dresden , Germany .
| | - M Rosenkranz
- Leibniz Institute for Solid State and Materials Research , 01069 Dresden , Germany .
| | - S Schiemenz
- Leibniz Institute for Solid State and Materials Research , 01069 Dresden , Germany .
| | - A A Popov
- Leibniz Institute for Solid State and Materials Research , 01069 Dresden , Germany .
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Zhang Y, Krylov D, Schiemenz S, Rosenkranz M, Westerström R, Dreiser J, Greber T, Büchner B, Popov AA. Cluster-size dependent internal dynamics and magnetic anisotropy of Ho ions in HoM2N@C80 and Ho2MN@C80 families (M = Sc, Lu, Y). Nanoscale 2014; 6:11431-11438. [PMID: 25149908 DOI: 10.1039/c4nr02864c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The paramagnetic NMR study of HoM2N@C80-Ih and Ho2MN@C80-Ih nitride cluster fullerenes (M = Sc, Lu, Y) reveals strong dependence of Ho-induced paramagnetic shifts (δ(para)) in (13)C NMR spectra on the size of the diamagnetic metal in the cluster. In particular, the δ(para) value in HoY2N@C80 is almost doubled in comparison to that in HoSc2N@C80. X-ray magnetic circular dichroism studies show that all Ho-nitride cluster fullerenes have the same magnetic ground state of Ho(3+). Point-charge ligand-field splitting calculations show that the increase of the M(3+) radius in going from Sc to Y results in a considerable increase of the energy splitting between different Jz states. This leads to a 19% higher magnetic anisotropy of Ho(3+) in HoY2N@C80 than in HoSc2N@C80 at 300 K. Variations of the molecular geometry and cluster dynamics with the size of the cluster are found to have even greater influence on δ(para) values. This work shows that the magnetic properties of the species confined inside the fullerene cages can be tuned using the geometrical factors such as the cluster and the cage size.
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Affiliation(s)
- Y Zhang
- Leibniz-Institute for Solid State and Materials Research (IFW Dresden), D-01171 Dresden, Germany.
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Svitova AL, Ghiassi KB, Schlesier C, Junghans K, Zhang Y, Olmstead MM, Balch AL, Dunsch L, Popov AA. Endohedral fullerene with μ3-carbido ligand and titanium-carbon double bond stabilized inside a carbon cage. Nat Commun 2014; 5:3568. [PMID: 24699547 DOI: 10.1038/ncomms4568] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 03/05/2014] [Indexed: 11/09/2022] Open
Abstract
In all metallofullerenes known before this work, metal atoms form single highly polar bonds with non-metal atoms in endohedral cluster. This is rather surprising for titanium taking into account the diversity of organotitanium compounds. Here we show that the arc-discharge synthesis of mixed titanium-lutetium metallofullerenes in the presence of ammonia, melamine or methane unexpectedly results in the formation of TiLu2C@I(h)-C80 with an icosahedral Ih(7) carbon cage. Single-crystal X-ray diffraction and spectroscopic studies of the compound reveal an unprecedented endohedral cluster with a μ3-carbido ligand and Ti-C double bond. The Ti(IV) in TiLu2C@I(h)-C80 can be reversibly reduced to the Ti(III) state. The Ti = C bonding and Ti-localized lowest unoccupied molecular orbital in TiLu2C@Ih-C80 bear a certain resemblance to titanium alkylidenes. TiLu2C@I(h)-C80 is the first metallofullerene with a multiple bond between a metal and the central, non-metal atom of the endohedral cluster.
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Affiliation(s)
- A L Svitova
- Department of Electrochemistry and Conducting Polymers, Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, Dresden 01069, Germany
| | - K B Ghiassi
- Department of Chemistry, University of California, Davis, California 95616, USA
| | - C Schlesier
- Department of Electrochemistry and Conducting Polymers, Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, Dresden 01069, Germany
| | - K Junghans
- Department of Electrochemistry and Conducting Polymers, Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, Dresden 01069, Germany
| | - Y Zhang
- Department of Electrochemistry and Conducting Polymers, Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, Dresden 01069, Germany
| | - M M Olmstead
- Department of Chemistry, University of California, Davis, California 95616, USA
| | - A L Balch
- Department of Chemistry, University of California, Davis, California 95616, USA
| | - L Dunsch
- Department of Electrochemistry and Conducting Polymers, Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, Dresden 01069, Germany
| | - A A Popov
- Department of Electrochemistry and Conducting Polymers, Leibniz Institute for Solid State and Materials Research Dresden, Helmholtzstrasse 20, Dresden 01069, Germany
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Sergeeva NS, Britaev TA, Sviridova IK, Akhmedova SA, Kirsanova VA, Popov AA, Antokhin AI, Frank GA, Kaprin AD. Scleractinium coral aquaculture skeleton: a possible 3D scaffold for cell cultures and bone tissue engineering. Bull Exp Biol Med 2014; 156:504-8. [PMID: 24771438 DOI: 10.1007/s10517-014-2385-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2012] [Indexed: 10/25/2022]
Abstract
Cytocompatibility of 5 coral aquaculture skeleton species derived from two families (Acroporidae and Pocilloporidae) was studied over the course of in vitro culturing in continuous human fibroblast culture by the MMT test. Biocompatibility and capacity of scaffold to "transfer" cell cultures (specifically, multipotent mesenchymal stromal cells) to sites of implantation were studied in vivo by subcutaneous implantation of skeletal fragments to rats. All coral skeleton aquaculture specimens were cytocompatible (nontoxic and with surface matrix characteristics satisfactory for cells), biocompatible, and could be tried as 3D matrices for bone tissue engineering.
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Affiliation(s)
- N S Sergeeva
- P. A. Hertsen Moscow Research Cancer Institute, Ministry of Health of the Russian Federation, Moscow, Russia
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Logutova LS, Popov AA, Petrukhin VA, Manannikova TN, Fedorov AA, Ramazanov MR, Krasnopol'skaia IV, Golovin AA, Cherneva MA. [Surgical treatment of pregnant women with benign ovarian tumors]. Vopr Onkol 2014; 60:392-395. [PMID: 25033698] [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 article describes the features of surgery in tumors and tumor-like formations of the ovaries in pregnant women. The influence of surgery on the course and outcome of pregnancy and childbirth is presented. It is showed high efficiency of laparoscopic surgery during I and II trimesters of pregnancy.
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Bakhtadze MA, Patijn J, Galaguza VN, Bolotov DA, Popov AA. Inter-examiner reproducibility of the segmental motion palpation springing test for side bending at level C2–C3. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/1753615411y.0000000001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Miroshnichenko IV, Goriachev AB, Popov AA, Morgunov VA, Ryzhikov MV, Merkulov AV. [Improvement of the system of medical equipmet rationing for military units during the wartime]. Voen Med Zh 2013; 334:21-25. [PMID: 24341006] [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 authors analyze new legal regulatory document--Medical equipment and reserves supply rate for military units and organisations of the Armed Forces of the Russian Federation, developed in the process of modernization of the system of medical equipment rationing for military units. New legal regulatory document was developed with the aim to replace the similar document d.d 1996-1997. The authors came to conclusion that costs of new medical equipment and reserves supply rates are similar to previous rates. At the same time costs new medical equipment supply rates for medical service increased more than 25%. It is related to change of the role of medical service in the system of medical supply of the Armed Forces of the Russian Federation. Modernization of the system of medical equipment supply rates for military unit of the Armed Forces of the Russian Federation, performed for the purpose of medical supplement for military unit in accordance with new state of the Armed Forces of the Russian Federation, allowed to actualize the regulatory framework of medical supply by means of development and adoption of new Supply and reserves rates be the Ministry of defence. Use if these rates will increase effectiveness and quality of medical supply during the wartime, provide a commonality of reserves of medical equipment and maintenance of established level of combat readiness of medical service of the Armed Forces of the Russian Federation.
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Davydov EL, Kapitonov VF, Khar'kov EI, Kapitonov FV, Popov AA. [Socio-economic and health organizational problems of emergency and out-patient care for elderly and senile patients with arterial hypertension (according to the sociological monitoring)]. Adv Gerontol 2013; 26:707-713. [PMID: 24738264] [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 article contains data about the peculiarities of socio-economic and health-organization factors in the rendering emergency and out-patient care for elderly and senile patients with arterial hypertension. The results of study of satisfaction by medical care quality depending on the age and gender of the patients are discussed. A large number of living alone and widowed patients among elderly patients is marked. About half of the respondents in both groups are low-income; among middle-income respondents a low proportion of the elderly is observed. The majority of patients can be admitted to the doctor in the polyclinic no earlier than 2 to 7 days from the moment of entry. The obtained data should be taken into account when forming a model of medical-social care for patients with arterial hypertension in older age groups.
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France LA, Scotchford CA, Grant DM, Rashidi H, Popov AA, Sottile V. Transient serum exposure regimes to support dual differentiation of human mesenchymal stem cells. J Tissue Eng Regen Med 2012; 8:652-63. [PMID: 23161724 DOI: 10.1002/term.1567] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 03/19/2012] [Accepted: 06/11/2012] [Indexed: 11/11/2022]
Abstract
Human mesenchymal stem cells (MSCs), which can generate both osteoblasts and chondrocytes, represent an ideal resource for orthopaedic repair using tissue-engineering approaches. One major difficulty for the development of osteochondral constructs using undifferentiated MSCs is that serum is typically used in culture protocols to promote differentiation of the osteogenic component, whereas existing chondrogenic differentiation protocols rely on the use of serum-free conditions. In order to define conditions which could be compatible with both chondrogenic and osteogenic differentiation in a single bioreactor, we have analysed the efficiency of new biphasic differentiation regimes based on transient serum exposure followed by serum-free treatment. MSC differentiation was assessed either in serum-free medium or with a range of transient exposure to serum, and compared to continuous serum-containing treatment. Although osteogenic differentation was not supported in the complete absence of serum, marker expression and extensive mineralization analyses established that 5 days of transient exposure triggered a level of differentiation comparable to that observed when serum was present throughout. This initial phase of serum exposure was further shown to support the successful chondrogenic differentiation of MSCs, comparable to controls maintained in serum-free conditions throughout. This study indicates that a culture based on temporal serum exposure followed by serum-free treatment is compatible with both osteogenic and chondrogenic differentiation of MSCs. These results will allow the development of novel strategies for osteochondral tissue engineering approaches using MSCs for regenerative medicine.
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Affiliation(s)
- L A France
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, UK
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Krasnopol'skiĭ VI, Popov AA, Abramian KN, Pushkar' DI, Gvozdev' MI, Malkhasian VA, Seregin AV, Petrova VD, Dobrovol'skaia TB, Nasyrova NI. [Complications of mesh-vaginopexy: results of a multicenter trial]. Urologiia 2012:29-32. [PMID: 22645998] [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
A retrospective multicenter trial with participation of 7 large clinics of Moscow and Moscow Region has been performed to characterize complications after correction of genital prolapse with application of the PROLIFT system. The trial enrolled women with uterine and vaginal prolapse of stage II-IV by POP-Q classification. The women also had anatomic and functional defects of the adjacent organs. From January 2005 to March 2008 all the patients have undergone vaginal extraperitoneal colpopexy using Prolift system. The results of the trial showed that extraperitoneal colpopexy with application of the Prolift system should not be considered as a low-invasive intervention and therefore it is not valid to use this technique as a routine method of genital prolapse treatment as in 29.5% cases the operation is accompanied with complications of different severity.
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Ismozherova NV, Andreev AN, Gavrilova EI, Popov AA, Fominykh MI, Kozulina EV, Saf'ianik EA. [The frequency and structure of cardiac rhythm disturbances in the women presenting with abdominal obesity during the postmenopausal period]. Klin Med (Mosk) 2012; 90:61-65. [PMID: 22645966] [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
We have studied the frequency and structure of cardiac rhythm (CR) disturbances in the women presenting with abdominal obesity (AO) in the postmenopausal period. The single-step study involved 210 postmenopausal women (median age 57 years) who were examined by 24-hour ECG monitoring, measurement of arterial pressure, body mass index, and the relationship between waist and hip circumferences. CR disturbances were revealed in all 159 women with abdominal obesity, ischemia in 16.9%, supraventricular extrasystole in 89.3%, ventricular extrasystole (VE) in 58.5%, high-grade extrasystole in 23.9%, paroxysms of supraventricular tachycardia in 1.9%, periods of asystole in 1.3%, synoatrial and atrioventricular blockade in 9.9%, His bundle branch block in 3.3%, sinus tachycardia in 48.8%, and sinus brachycardia in 23.9% of the patients. The risk of development of VE in the women with AO increased by 3.8 times in the presence of concomitant coronary heart disease and by 2.9 times in case of chronic cardiac failure. The frequency of VE was significantly higher in the patients with abdominal obesity than without it (odds ratio 2.2). It is concluded that women presenting with abdominal obesity during the postmenopausal period are characterized by the high frequency of cardiac rhythm disturbances and ischemia, with each fourth patient being at high risk of sudden death. The elevated risk of ventricular extrasystole in the postmenopausal period is associated with AO, coronary heart disease, and chronic heart failure. The frequency of VE is unrelated to ulcer disease, chronic cholecystitis, cholelithiasis, chronic pancreatitis, and impaired function of the thyroid gland.
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Popov AA, Izmozherova NV, Strunina MV, Teliushchenko MV. [Detection of distal forearm osteopenia and osteoporosis in Perm women aged 50 years or older]. TERAPEVT ARKH 2009; 81:52-56. [PMID: 20141015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
AIM to assess the prevalence of subnormal bone mineral density (BMD) of the distal forearm among women living in Perm and the Perm Region, by taking into account the data of distal forearm X-ray densitometry and risk factors of osteoporosis (OP). SUBJECTS AND MATERIALS This one-stage study included 1765 women aged 50-90 years (mean age 61.8 years, standard deviation 8.1). All the participants filled in the questionnaire of the National Program of Osteoporosis Risk Factors Study. Radial BMD (of the radius) was estimated by X-ray absorptiometry on a DTX 200 unit. RESULTS Osteopenia was detected 593 (33.6%) females aged 50 years or older and OP was found in 391 (22.2%). The women with the osteopenic syndrome had lower body weight. Those with OP showed much more frequently vertebral fractures and essential hypertension. Irrespective of the BMD, the proportion of regular dairy produce was very small. CONCLUSION In more than a half of the 50-year-old or more women residing in Perm and the Perm Region have lower distal forearm BMD and increased risk for fractures in minimal injury. The proportion of women with EH is statistically significant higher among the women with the osteopenic syndrome.
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Popov AA, Izmozherova NV, Tagil'tseva NV, Kozulina EV, Gavrilova EI, Fominykh MI. [Metabolic syndrome and decreased bone mineral density in climacteric women]. Klin Med (Mosk) 2008; 86:51-53. [PMID: 19048839] [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: 05/27/2023]
Abstract
The objective of this work was to evaluate the influence of insulin resistance on the development of syndrome of osteopenia. The case-control study included 124 women with osteopenia and osteoporosis of the distal forearm segment diagnosed by X-ray densitometry in accordance with the WHO criteria (DTX 200). One group of the patients comprised 62 women with metabolic syndrome (MS) by the criteria of NCPE ATP III. The other group consisted of 62 women without MS. Parameters measured in the study included antropometric parameters, blood glucose level, and characteristics of lipid metabolism. The fraction of women with osteoporosis (OP) in group 1 was smaller than in the women without MS (chi2 = 4.501; df=1; p = 0.034). The two groups were not significantly diferent as regards the non-traumatic fracture rate (chi2 = 0.278; df=2; p = 0.870). Nor did they differ in terms of the frequency of cardiovascular complications. It is concluded that disturbances of carbohydrate metabolism and cardiovascular pathology may be associated with reduced bone mineral density (BMD) while combination of these disorders in a single patient should be regarded as a manifestation of polymorbidity characteristic of this group of women.
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Izmozherova NV, Popov AA, Getmanova NA, Gavrilova EI, Kozulina WC, Nuzhina AV. [Quality of life in women with arterial hypertension in the climacteric period]. Klin Med (Mosk) 2008; 86:37-40. [PMID: 19177792] [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: 05/27/2023]
Abstract
This study was designed to compare quality of life (QL) in women with arterial hypertension (AH) and with normal arterial pressure in the climacteric period. It included 146 postmenopausal women with AH (age median 57 years). The control group comprised 146 women without AH matched by age and duration of menopause. QL was assessed from the results of the SF-36 questionnaire and the severity of climacteric syndrome (CS) based on the modified menopausal index (MMI), pain in the back, joints, heart and headache, and also with the use of the visual analog scale (VAS). The severity of CS in patients with AH, headache, and cardialgia was much greater compared with controls. AH was associated with limitations as assessed by physical functioning (P = 0.004), physical role functioning (P = 0.026), role-emotional functioning (P = 0.0001), and psychic health scales P = 0.011). At the same time, AH was unrelated to substantial limitations as apparent from pain (P = 0.715) and social functioning (P = 0.052) scales. Estimates of general health status in women with AH were significantly lower than in its absence (P < 0.001). To summarize, AH considerably deteriorates QL in postmenopausal women.
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