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Romanov AA, Sarantseva TS, Sviridov AV, Silaev AA, Vvedenskii NV, Frolov MV. Streaking camera in the high intensity regime. Opt Lett 2024; 49:1037-1040. [PMID: 38359247 DOI: 10.1364/ol.510636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 01/04/2024] [Indexed: 02/17/2024]
Abstract
The laser-induced decay of an atomic system in an intense infrared and perturbative extreme ultraviolet (XUV) pulse is considered within Keldysh and streaking ionization channels. The streak camera method is discussed for two cases corresponding to different ranges of photoelectron momentum: i) the streaking channel significantly dominates the Keldysh channel and ii) the Keldysh channel of ionization is dominant, while two channels may interfere. The retrieval of XUV pulse parameters for these two cases is discussed and supported by numerical calculations.
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Sviridov AV, Karpov MV, Fokina VV, Donova MV. Cholesterol Assay Based on Recombinant Cholesterol Oxidase, ABTS, and Horseradish Peroxidase. Methods Mol Biol 2023; 2704:157-171. [PMID: 37642843 DOI: 10.1007/978-1-0716-3385-4_9] [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: 08/31/2023]
Abstract
Cholesterol determination by cholesterol oxidase reaction is a fast, convenient, and highly specific approach with widespread use in clinical diagnostics. Routinely, endpoint measurements with 4-aminophenazone or 4-aminoantipyrine as chromogens and sodium cholate, surfactants, or alcohols as solubilizing agents are used. Here we describe a novel kinetic method to determine cholesterol in 0.05-0.75 mM range in neutral or acidic buffers by use of recombinant cholesterol oxidase from Nocardioides simplex in a coupled reaction with horseradish peroxidase, ABTS as a chromogen, and methyl-β-cyclodextrin as a solubilizing agent.
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Affiliation(s)
- Alexey V Sviridov
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Pushchino, Russia
| | - Mikhail V Karpov
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Pushchino, Russia
| | - Victoria V Fokina
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Pushchino, Russia
| | - Marina V Donova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Pushchino, Russia
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Fokina VV, Karpov MV, Kollerov VV, Bragin EY, Epiktetov DO, Sviridov AV, Kazantsev AV, Shutov AA, Donova MV. Recombinant Extracellular Cholesterol Oxidase from Nocardioides simplex. Biochemistry (Mosc) 2022; 87:903-915. [PMID: 36180991 DOI: 10.1134/s0006297922090048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/01/2022] [Accepted: 08/01/2022] [Indexed: 06/16/2023]
Abstract
Cholesterol oxidase is a highly demanded enzyme used in medicine, pharmacy, agriculture, chemistry, and biotechnology. It catalyzes oxidation of 3β-hydroxy-5-ene- to 3-keto-4-ene- steroids with the formation of hydrogen peroxide. Here, we expressed 6xHis-tagged mature form of the extracellular cholesterol oxidase (ChO) from the actinobacterium Nocardioides simplex VKM Ac-2033D (55.6 kDa) in Escherichia coli cells. The recombinant enzyme (ChONs) was purified using affinity chromatography. ChONs proved to be functional towards cholesterol, cholestanol, phytosterol, pregnenolone, and dehydroepiandrosterone. Its activity depended on the structure and length of the aliphatic side chain at C17 atom of the steroid nucleus and was lower with pregnenolone and dehydroepiandrosterone. The enzyme was active in a pH range of 5.25÷6.5 with the pH optimum at 6.0. Kinetic assays and storage stability tests demonstrated that the characteristics of ChONs were generally comparable with or superior to those of commercial ChO from Streptomyces hygroscopicus (ChOSh). The results contribute to the knowledge on microbial ChOs and evidence that ChO from N. simplex VKM Ac-2033D is a promising agent for further applications.
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Affiliation(s)
- Victoria V Fokina
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Pushchino, Moscow Region, 142290, Russia.
| | - Mikhail V Karpov
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Pushchino, Moscow Region, 142290, Russia.
| | - Vyacheslav V Kollerov
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Pushchino, Moscow Region, 142290, Russia.
| | - Eugeny Yu Bragin
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Pushchino, Moscow Region, 142290, Russia.
| | - Dmitry O Epiktetov
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Pushchino, Moscow Region, 142290, Russia.
| | - Alexey V Sviridov
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Pushchino, Moscow Region, 142290, Russia.
| | - Alexey V Kazantsev
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia.
| | - Andrey A Shutov
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Pushchino, Moscow Region, 142290, Russia.
| | - Marina V Donova
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Center for Biological Research of the Russian Academy of Sciences", Pushchino, Moscow Region, 142290, Russia.
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Ermakova IT, Shushkova TV, Sviridov AV, Zelenkova NF, Vinokurova NG, Baskunov BP, Leontievsky AA. Organophosphonates utilization by soil strains of Ochrobactrum anthropi and Achromobacter sp. Arch Microbiol 2017; 199:665-675. [PMID: 28184965 DOI: 10.1007/s00203-017-1343-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [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: 11/03/2016] [Revised: 01/12/2017] [Accepted: 01/19/2017] [Indexed: 10/20/2022]
Abstract
Four bacterial strains from glyphosate- or alkylphosphonates-contaminated soils were tested for ability to utilize different organophosphonates. All studied strains readily utilized methylphosphonic acid and a number of other phosphonates, but differed in their ability to degrade glyphosate. Only strains Ochrobactrum anthropi GPK 3 and Achromobacter sp. Kg 16 utilized this compound after isolation from enrichment cultures with glyphosate. Achromobacter sp. MPK 7 from the same enrichment culture, similar to Achromobacter sp. MPS 12 from methylphosphonate-polluted source, required adaptation to growth on GP. Studied strains varied significantly in their growth parameters, efficiency of phosphonates degradation and characteristic products of this process, as well as in their energy metabolism. These differences give grounds to propose a possible model of interaction between these strains in microbial consortium in phosphonate-contaminated soils.
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Affiliation(s)
- Inna T Ermakova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 5 Prospect Nauki, Pushchino, Moscow, 142290, Russia
| | - Tatyana V Shushkova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 5 Prospect Nauki, Pushchino, Moscow, 142290, Russia
| | - Alexey V Sviridov
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 5 Prospect Nauki, Pushchino, Moscow, 142290, Russia.
| | - Nina F Zelenkova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 5 Prospect Nauki, Pushchino, Moscow, 142290, Russia
| | - Natalya G Vinokurova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 5 Prospect Nauki, Pushchino, Moscow, 142290, Russia
| | - Boris P Baskunov
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 5 Prospect Nauki, Pushchino, Moscow, 142290, Russia
| | - Alexey A Leontievsky
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 5 Prospect Nauki, Pushchino, Moscow, 142290, Russia
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Shushkova TV, Vinokurova NG, Baskunov BP, Zelenkova NF, Sviridov AV, Ermakova IT, Leontievsky AA. Glyphosate acetylation as a specific trait of Achromobacter sp. Kg 16 physiology. Appl Microbiol Biotechnol 2016; 100:847-55. [PMID: 26521241 DOI: 10.1007/s00253-015-7084-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 10/07/2015] [Accepted: 10/12/2015] [Indexed: 10/22/2022]
Abstract
The growth parameters of Achromobacter sp. Kg 16 (VKM B-2534 D), such as biomass and maximum specific growth rate, depended only on the source of phosphorus in the medium, but not on the carbon source or the presence of growth factors. With glyphosate as a sole phosphorus source, they were still 40-50 % lower than in media supplemented with orthophosphate or other organophosphonate-methylphosphonic acid. At the first time process of glyphosate acetylation and accumulation of acetylglyphosate in culture medium were revealed in this strain. Acetylglyphosate isolated from cultural liquid was identified by mass spectroscopy; its mass spectrum fully corresponded with that of chemically synthesized acetylglyphosate. Even poorer growth was observed in media with acetylglyphosate: although the strain was able to utilize this compound as a sole source of phosphorus, the maximum biomass was still 58-70 % lower than with glyphosate. The presence of acetylglyphosate in culture medium could also hinder the utilization of glyphosate as a phosphorus source. Therefore, the acetylation of glyphosate may be a specific feature of Achromobacter sp. Kg 16 responsible for its poor growth on this compound.
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Affiliation(s)
- Tatyana V Shushkova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospect Nauki 5, Pushchino, Moscow Region, 142290, Russia
| | - Natalya G Vinokurova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospect Nauki 5, Pushchino, Moscow Region, 142290, Russia
| | - Boris P Baskunov
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospect Nauki 5, Pushchino, Moscow Region, 142290, Russia
| | - Nina F Zelenkova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospect Nauki 5, Pushchino, Moscow Region, 142290, Russia
| | - Alexey V Sviridov
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospect Nauki 5, Pushchino, Moscow Region, 142290, Russia
| | - Inna T Ermakova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospect Nauki 5, Pushchino, Moscow Region, 142290, Russia.
| | - Alexey A Leontievsky
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospect Nauki 5, Pushchino, Moscow Region, 142290, Russia
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Sviridov AV, Shushkova TV, Ermakova IT, Ivanova EV, Epiktetov DO, Leont'evskii AA. [Microbial degradation of glyphosate herbicides (review)]. Prikl Biokhim Mikrobiol 2015; 51:183-90. [PMID: 26027353 DOI: 10.7868/s0555109915020221] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This review analyzes the issues associated with biodegradation of glyphosate (N-(phosphonomethyl)glycine), one of the most widespread herbicides. Glyphosate can accumulate in natural environments and can be toxic not only for plants but also for animals and bacteria. Microbial transformation and mineralization ofglyphosate, as the only means of its rapid degradation, are discussed in detail. The different pathways of glyphosate catabolism employed by the known destructing bacteria representing different taxonomic groups are described. The potential existence of alternative glyphosate degradation pathways, apart from those mediated by C-P lyase and glyphosate oxidoreductase, is considered. Since the problem of purifying glyphosate-contaminated soils and water bodies is a topical issue, the possibilities of applying glyphosate-degrading bacteria for their bioremediation are discussed.
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Sviridov AV, Shushkova TV, Zelenkova NF, Vinokurova NG, Morgunov IG, Ermakova IT, Leontievsky AA. Distribution of glyphosate and methylphosphonate catabolism systems in soil bacteria Ochrobactrum anthropi and Achromobacter sp. Appl Microbiol Biotechnol 2012; 93:787-96. [PMID: 21789492 DOI: 10.1007/s00253-011-3485-y] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Revised: 06/30/2011] [Accepted: 07/13/2011] [Indexed: 11/30/2022]
Abstract
Bacterial strains capable of utilizing methylphosphonic acid (MP) or glyphosate (GP) as the sole sources of phosphorus were isolated from soils contaminated with these organophosphonates. The strains isolated from MP-contaminated soils grew on MP and failed to grow on GP. One group of the isolates from GP-contaminated soils grew only on MP, while the other one grew on MP and GP. Strains Achromobacter sp. MPS 12 (VKM B-2694), MP degraders group, and Ochrobactrum anthropi GPK 3 (VKM B-2554D), GP degraders group, demonstrated the best degradative capabilities towards MP and GP, respectively, and were studied for the distribution of their organophosphonate catabolism systems. In Achromobacter sp. MPS 12, degradation of MP was catalyzed by C-P lyase incapable of degrading GP (C-P lyase I). Adaptation to growth on GP yielded the strain Achromobacter sp. MPS 12A, which retained its ability to degrade MP via C-P lyase I and was capable of degrading GP with formation of sarcosine, thus suggesting the involvement of a GP-specific C-P lyase II. O. anthropi GPK 3 also degraded MP via C-P lyase I, but degradation of GP in it was initiated by glyphosate oxidoreductase, which was followed by product transformation via the phosphonatase pathway.
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Affiliation(s)
- Alexey V Sviridov
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Prospect Nauki 5, Pushchino, Moscow Region, 142290, Russia
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Shushkova TV, Ermakova IT, Sviridov AV, Leont'evskiĭ AA. [Biodegradation of glyphosate by soil bacteria: optimization of culture and method for active biomass preservation]. Mikrobiologiia 2012; 81:48-55. [PMID: 22629681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
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Sviridov AV, Zelenkova NF, Vinokurova NG, Ermakova IT, Leontievsky AA. New approaches to identification and activity estimation of glyphosate degradation enzymes. Biochemistry (Mosc) 2011; 76:720-5. [PMID: 21639854 DOI: 10.1134/s0006297911060149] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
We propose a new set of approaches, which allow identifying the primary enzymes of glyphosate (N-phosphonomethyl-glycine) attack, measuring their activities, and quantitative analysis of glyphosate degradation in vivo and in vitro. Using the developed approach we show that glyphosate degradation can follow different pathways depending on physiological characteristics of metabolizing strains: in Ochrobactrum anthropi GPK3 the initial cleavage reaction is catalyzed by glyphosate-oxidoreductase with the formation of aminomethylphosphonic acid and glyoxylate, whereas Achromobacter sp. MPS12 utilize C-P lyase, forming sarcosine. The proposed methodology has several advantages as compared to others described in the literature.
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Affiliation(s)
- A V Sviridov
- Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia.
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Ivanchenkova RA, Sviridov AV, Kuznetsov NA, Dadvani SA, Grachev SV. [Immunomorphologic detection of apoprotein B antigenic determinants in the gallbladder wall in cholesterosis and cholelithiasis]. Khirurgiia (Mosk) 2002:19-24. [PMID: 11810934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
The presence and location of apoprotein B (Apo B) antigenic determinants in cholesterosis and cholelithiasis in gall bladder wall were detected for elaboration of modified Apo B role in pathogenesis of these diseases. Macroscopically changed parts of gall bladder (GB) wall of patients with gall bladder cholesterosis (GBC), and also macroscopically unchanged parts of GB wall of patients with cholelithiasis (CL) after cholecystectomy were studied. Macroscopically unchanged parts of GB wall obtained during autopsy of persons without symptoms of GB pathology were used as a control. Apo B location was studied with monoclonal (MAB 5F8 to Apo B) and polyclonal (PAB) antibodies; Apo B modified by malonic dialdehyde and oxidized by Cu2+ (4C11), Apo A with MAB1C5. Antibodies to CD 68 (specific marker of macrophages) was positive control, antibodies to trichinella--negative control. The most intensive accumulation of modified Apo B was revealed in foam cells region with accumulate lipids and form polyps that testifies to connection of apoproteins with lipids and foam cells and suggests their role in pathogenesis of GBC. More intensive staining of GB epithelial cells, particularly on GB peripheral parts by antibodies to apoproteins compared with surrounding tissues shows that bile is the source of detected modified apoproteins. Increase of absorption and accumulation of apoproteins in GB wall were also revealed in CL but these processes are less intensive than in GBS.
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Ivanchenkova RA, Sviridov AV, Grachev SV. [Pathogenesis of gallbladder cholesterolemia]. Klin Med (Mosk) 2002; 80:14-9. [PMID: 11898714] [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: 02/24/2023]
Abstract
Disturbances in cholesterol metabolism may be essential in pathogenesis of gallbladder cholesterosis (GBC). HDL cholesterol in the blood is subnormal. Physicochemical changes in the superficial layer of HDL induce impairment of free cholesterol esterification. Blood lipids and their apoprotein component are important for bile cholesterol level. In gallbladder contractile dysfunction but unaffected absorption there is enhanced passive and active cholesterol transport from the supersaturated bile to the cytoplasm of the epithelial cells from the bladder mucosa. Mechanism of intensive absorption of the lipids by macrophages operates primarily via modification of their apoprotein component. Modification of apoprotein occurs both in blood and gallbladder. Modified apoprotein is recognized by the macrophage and is absorbed by it together with transported lipids. In accumulation of great quantities of lipids in the macrophage it becomes big, slow, stays in the mucous or submucous layer of the wall and finally transforms into the foam cell. Moreover, deterioration of HDL cholesterol acception in GBC leads to slow discharge of cholesterol from the bladder wall.
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Borzunova EA, Akramov RL, Seliankina KP, Plotko EG, Saĭchenko SP, Makarenko NP, Gurvich VB, Baevskiĭ AM, Sviridov AV. [Occupational evaluation of new reagent technologies for drinking water preparation]. Med Tr Prom Ekol 2000:43-6. [PMID: 10826376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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Ivanchenkova RA, Sviridov AV, Ozerova IN, Perova NV, Grachev SV. [High-density lipoproteins in cholesterosis of the gall bladder]. Klin Med (Mosk) 2000; 78:27-31. [PMID: 10833886] [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: 02/16/2023]
Abstract
The composition of serum high-density lipoproteins (HDL) was studied in 64 patients with polypous cholesterosis (PC). The spectrum of serum lipids in patients with PC was characterized by the lower concentrations of HDL cholesterol (42.0 +/- 2.5 mg/dl; p < 0.05) and higher concentrations of low-density lipoproteins (LDL) cholesterol (169.9 +/- 6.9 mg/dl; p < 0.01) than those in the controls. The decreased HDL cholesterol, or hypoalphacholesterolemia was associated with quantitative changes in HDL phospholipids (PL) (66.48 +/- 3.4; p < 0.01) and with changes in the composition of individual PL by lowering the proportion of lecithin (47.13 +/- 2.19 mg/dl; p < 0.01). It may be suggested that the lower amount of HDL cholesterol is caused by the decreased HDL acception of free cholesterol from the peripheral cell membranes due to the impaired complexation of PL with free cholesterol and associated the altered PL composition of the superficial monolayer of a lipoprotein particle. At the same time the physicochemical changes in Hdl superficial layer are a cause of abnormal free cholesterol esterification and the impaired plunge of esterified cholesterol into the nucleus of a HDL particle, which facilitates the conversion of HDL to LDL and may explain elevated LDL levels in cholesterosis. The findings suggest that serum lipids are involved in the development of cholesterosis.
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Ivanchenkova RA, Sviridov AV. [Current views on pathogenesis of cholelithiasis]. Klin Med (Mosk) 1999; 77:8-12. [PMID: 10394778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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Gladyshev IV, Kolesnikov SI, Semeniuk AV, Sviridov AV. [Morphological evidence of the possible role of cytochrome P-450 in the development of an autoimmune process in the liver]. Biull Eksp Biol Med 1991; 112:546-9. [PMID: 1810503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Morphological alterations in rat's liver during lipid peroxidation induction by paraqat were studied. Infiltration of liver by lymphocytes, macrophages and plasma cells was studied. On ultrastructure level profound extension of rough reticulum cistern and destruction of mitochondrial cristae were revealed by immunohistochemical methods. Cytochrom P-450 was localized on the fibrin fibers.
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Sviridov AV. [Relation between biological diagnostics and systematics]. Zh Obshch Biol 1973; 34:900-6. [PMID: 4779691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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