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Zakharov MV, Fedulova MV, Pigolkin YI. [Sudden death in school-aged children at physical exercise: forensic diagnosis]. Sud Med Ekspert 2021; 64:64-67. [PMID: 34264584 DOI: 10.17116/sudmed20216404164] [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 Acomprehensive forensic study of cases of sudden death of school-age children during physical exertion and sports. Investigated 9 cases of sudden death of children aged 8 to 17 years that occurred during exercise. It was studied anthropometric indicators, histological and biochemical studies to identify changes in internal organs and the cardiovascular system. The forensic medical characteristics of sudden death cases of schoolchildren are given. Along with the constitutional features, the characteristic changes in some tissues and internal organs in particular the heart and blood vessels were determined. The data obtained make it possible to develop an algorithm and propose a methodological approach for diagnosing sudden death of school-age children. The results of the study can be used as additional forensic criteria for assessing the risk of sudden death of children during physical activity.
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Affiliation(s)
- M V Zakharov
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - M V Fedulova
- Russian Center for Forensic Medicine, Moscow, Russia
| | - Yu I Pigolkin
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
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Vinnikova MA, Utkin SI, Nenasteva AY, Zakharov MV. [The efficacy of remaxol addition in the treatment of alcohol withdrawal syndrome]. Zh Nevrol Psikhiatr Im S S Korsakova 2016; 116:40-46. [PMID: 26977624 DOI: 10.17116/jnevro20161161140-46] [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] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To study the efficacy of remaxol addition in the treatment scheme of alcohol withdrawal syndrome. MATERIAL AND METHODS Eighty patients with alcohol dependence and physical symptoms of alcohol withdrawal syndrome were enrolled. All patients received basic therapy in accordance to the applicable standards of treatment. The patients were randomized to remaxol introduced intravenously 2 times a day (morning and afternoon) in dose of 400 ml for 7 days (n=40) and saline with 25%-magnesium sulfate (10 ml) and 4% potassium chloride (10 ml) (n=40). RESULTS The effectiveness of the inclusion of remaxol was expressed in a more rapid relief of asthenic syndrome, reduction of phenomena such as tension, dysphoria, headache and impaired coordination of samples. Patients treated with remaxol demonstrated a trend towards a more rapid reduction of the affective (p=0.08) and behavioral components (p=0.09) of the syndrome of pathological craving for alcohol. Hepatoprotective and detoxification properties of the drug were confirmed by the significant decline in ALT and AST activity to the 20th day of treatment. Significant positive changes in lipid metabolism (HDL to the 7th day of treatment) and a normalizing effect on the processes of tissue respiration were shown as well. No adverse effects were noted. CONCLUSION The data obtained allow to recommend the inclusion of remaxol in the complex treatment regimens of alcohol withdrawal syndrome to improve the treatment efficacy.
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Affiliation(s)
- M A Vinnikova
- Serbsky Federal Medical Research Centre for Psychiatry and Narcology, Moscow; Sechenov First Moscow State Medical University, Moscow
| | - S I Utkin
- Serbsky Federal Medical Research Centre for Psychiatry and Narcology, Moscow; Sechenov First Moscow State Medical University, Moscow
| | - A Yu Nenasteva
- Serbsky Federal Medical Research Centre for Psychiatry and Narcology, Moscow; Sechenov First Moscow State Medical University, Moscow
| | - M V Zakharov
- Serbsky Federal Medical Research Centre for Psychiatry and Narcology, Moscow
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Mardanly CG, Arsen'eva VA, Frigo NV, Rotanov SV, Amelina EA, Zakharov MV, Mardanly SG, Arseniyeva VA, Frigo NV, Rotanov SV, Amelina YA, Zakharov MV. Using the Line Blot Syphilis test system for diagnosingsyphilis by the linear immunoblotting method. Vestnik dermatologii i venerologii 2011. [DOI: 10.25208/vdv1022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
ZAO ECOlab (Russia) developed Line Blot Syphilis, a new test system on the basis of the linear immunoblotting method
using Treponema рallidum recombinant antigens. The article assessed the diagnostic value of the Line Blot Syphilis test
system in the form of a confirmatory test. As a part of the conducted study, the test system demonstrated its absolute
sensitivity and specificity to serum-positive (n = 237) and serum-negative (n = 114) samples, in which the presence
or absence of Т.pallidum antibodies was confirmed by two treponemal tests. As a result of examining 14 samples
attributed to doubtful analytes based on two test results (passive hemagglutination test and immunofluorescence test
with absorption), the data compliance between the Line Blot Syphilis test system and data from INNO-LIA Syphilis Score
amounted to 100% (14/14) or 93% (13/14) for the immune-enzyme assay and 57% (8/14) for the immunofluorescence
test with absorption. It is recommended to use the Line Blot Syphilis test system (ZAO ECOlab) as a confirmatory syphilis
test.
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Zagranichny VE, Rudenko NV, Gorokhovatsky AY, Zakharov MV, Balashova TA, Arseniev AS. Traditional GFP-Type Cyclization and Unexpected Fragmentation Site in a Purple Chromoprotein fromAnemonia sulcata, asFP595†. Biochemistry 2004; 43:13598-603. [PMID: 15491166 DOI: 10.1021/bi0488247] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The purple chromoprotein (asFP595) from Anemonia sulcata belongs to the family of green fluorescent protein (GFP). Absorption and emission spectra of asFP595 are similar to those of a number of recently cloned GFP-like red proteins of the DsRed subfamily. The earlier proposed asFP595 chromophore structure [Martynov, V. I.; et al. (2001) J. Biol. Chem. 276, 21012-21016] was postulated to result from an "alternative cyclization" giving rise to a pyrazine-type six-membered heterocycle. Here we report that the asFP595 chromophore is actually very close in chemical structure to that of zFP538, a yellow fluorescent protein [Zagranichny, V. E.; et al. (2004) Biochemistry 43, 4764-4772]. NMR spectroscopic studies of four chromophore-containing peptides (chromopeptides) isolated under mild conditions from enzymatic digests of asFP595 and one chromopeptide obtained from DsRed revealed that all of them contain a p-hydroxybenzylideneimidazolinone moiety formed by Met-65/Gln-66, Tyr-66/67, and Gly-67/68 of asFP595/DsRed, respectively. Two asFP595 chromopeptides are proteolysis products of an isolated full-length polypeptide containing a GFP-type chromophore already formed and arrested at an earlier stage of maturation. The two other asFP595 chromopeptides were isolated as proteolysis products of the purified chromophore-containing C-terminal fragment. One of these has an oxo group at Met-65 C(alpha) and is a hydrolysis product of another one, with the imino group at Met-65 C(alpha). The N-unsubstituted imino moiety of the latter is generated by spontaneous polypeptide chain cleavage at a very unexpected site, the former peptide bond between Cys-64 C' and Met-65 N(alpha). Our data strongly suggest that both zFP538 and asFP595 could be attributed to the DsRed subfamily of GFP-like proteins.
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Affiliation(s)
- Vasily E Zagranichny
- Branch of S&O Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, Russia.
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Zagranichny VE, Rudenko NV, Gorokhovatsky AY, Zakharov MV, Shenkarev ZO, Balashova TA, Arseniev AS. zFP538, a yellow fluorescent protein from coral, belongs to the DsRed subfamily of GFP-like proteins but possesses the unexpected site of fragmentation. Biochemistry 2004; 43:4764-72. [PMID: 15096045 DOI: 10.1021/bi036059a] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The yellow fluorescent protein (zFP538) from coral Zoanthus sp. belongs to a family of green fluorescent protein (GFP). Absorption and emission spectra of zFP538 show an intermediate bathochromic shift as compared with a number of recently cloned GFP-like red fluorescent and nonfluorescent chromoproteins of the DsRed subfamily. Here we report that the zFP538 chromophore is very close, if not identical, in chemical structure to that of DsRed. To gain insight into the mechanism of zFP538 fluorescence and chromophore structure and chemistry, we studied three chromophore-containing peptides isolated from enzymatic digests of zFP538. Like GFP and DsRed chromophores, these contain a p-hydroxybenzylideneimidazolinone moiety formed by Lys-66, Tyr-67, and Gly-68 of zFP538. One of the peptides studied, the hexapeptide FKYGDR derivative, is a proteolysis product of the zFP538 full-length polypeptide containing a GFP-type chromophore already formed and arrested at an earlier stage of maturation. The two other peptides are the derivatives of the pentapeptide KYGDR resulted from the protein in which the chromophore maturation process had been completed. One of these has an oxogroup at Lys-66 C(alpha) and is a hydrolysis product of another one, with the imino group at Lys-66 C(alpha). The N-unsubstituted imino moiety of the latter is generated by spontaneous polypeptide chain fragmentation at a very unexpected site, the former peptide bond between Phe-65 C' and Lys-66 N(alpha). Also observed in the entire protein under mild denaturing conditions, this fragmentation is likely the feature of native zFP538 chromophore that distinguishes it chemically from the DsRed chromophore.
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Affiliation(s)
- Vasily E Zagranichny
- Branch of S&O Institute of Bioorganic Chemistry RAS, Nauki Pr. 6, 142290 Pushchino, Russia.
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Gorokhovatsky AY, Rudenko NV, Marchenkov VV, Skosyrev VS, Arzhanov MA, Burkhardt N, Zakharov MV, Semisotnov GV, Vinokurov LM, Alakhov YB. Homogeneous assay for biotin based on Aequorea victoria bioluminescence resonance energy transfer system. Anal Biochem 2003; 313:68-75. [PMID: 12576060 DOI: 10.1016/s0003-2697(02)00514-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Here we describe a homogeneous assay for biotin based on bioluminescence resonance energy transfer (BRET) between aequorin and enhanced green fluorescent protein (EGFP). The fusions of aequorin with streptavidin (SAV) and EGFP with biotin carboxyl carrier protein (BCCP) were purified after expression of the corresponding genes in Escherichia coli cells. Association of SAV-aequorin and BCCP-EGFP fusions was followed by BRET between aequorin (donor) and EGFP (acceptor), resulting in significantly increasing 510 nm and decreasing 470 nm bioluminescence intensity. It was shown that free biotin inhibited BRET due to its competition with BCCP-EGFP for binding to SAV-aequorin. These properties were exploited to demonstrate competitive homogeneous BRET assay for biotin.
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Skosyrev VS, Rudenko NV, Yakhnin AV, Zagranichny VE, Popova LI, Zakharov MV, Gorokhovatsky AY, Vinokurov LM. EGFP as a fusion partner for the expression and organic extraction of small polypeptides. Protein Expr Purif 2003; 27:55-62. [PMID: 12509985 DOI: 10.1016/s1046-5928(02)00595-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Green fluorescent protein (GFP) is widely used as an excellent reporter module of the fusion proteins. The unique structure of GFP allows isolation of the active fluorescent protein directly from the crude cellular sources by extraction with organic solvents. We demonstrated the stable expression of four short polypeptides fused to GFP in Escherichia coli cells, including antimicrobial cationic peptides, which normally kill bacteria. EGFP module protected fusion partners from the intracellular degradation and allowed the purification of the chimerical proteins by organic extraction. The nature of the polypeptide fused to GFP, as opposed to the order of GFP and the polypeptide modules in the fusion protein, influenced the efficiency of the described purification technique.
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Affiliation(s)
- Vitaly S Skosyrev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Pushchino Branch, Russian Academy of Sciences, Pushchino, Moscow 142290, Russia.
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Koposov PV, KovalevI VI, Strykov VA, Kovalev LV, Loseva MS, Starostina AI, Prostomolotov OA, Zakharov MV. [Platelet concentrate transfusion during polychemotherapy of children with solid tumors]. Vopr Onkol 2002; 48:365-8. [PMID: 12455364] [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: 02/27/2023]
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Sokolov SL, Zakharov MV, Esikova TZ, Evdokimova EG, Alakhov IB. [Identification and cloning of peptide synthetase genes of thermostable bacilli using the polymerase chain reaction]. Genetika 2002; 38:1614-1620. [PMID: 12575445] [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] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Fourteen thermophilic and thermostable strains of the genus Bacillus were studied. Total DNA was isolated from these strains and used as a template to identify and clone peptide synthetase genes by means of polymerase chain reaction. Amplified DNA fragments were cloned into a phasmid vector, and nucleotide sequences of cloned fragments were determined. Stringent thermophilic strains were shown to lack genetic systems, which are responsible for the synthesis of secondary metabolites and homologous to the known peptide synthetase genes. On the contrary, thermostable strains had peptide synthetases and produced antimicrobial secondary metabolites. Analysis of nucleotide sequences and deduced amino acid sequences of cloned PCR fragments from B. licheniformis strains VK2, VK21, and VK2101 showed that they are absolutely identical. The cloned DNA fragment was found to be a portion of the open reading frame, which we termed ORF1. Data from analysis of a partial nucleotide sequence of the peptide synthetase gene of strain VK21 indicated that a 9.5-kb region of chromosomal DNA contains sequences of two genes homologous to the B. subtilis peptide synthetase genes dhbB and dhbF. Strains VK2, VK21, and VK2101 were shown to synthesize siderophores. A method for screening bacteria with peptide synthetase genes has been developed.
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Affiliation(s)
- S L Sokolov
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Moscow Oblast, Pushchino, 142290 Russia
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Denesyuk AI, Zakharov MV, Abramov VM, Zav'yalov VP. Protein V, a novel type-II IgG receptor from Streptococcus sp.: sequence, homologies and putative Fc-binding site. Gene 1993; 124:149-50. [PMID: 8095040 DOI: 10.1016/0378-1119(93)90781-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Smirnov OYu, Denesyuk AI, Zakharov MV, Abramov VM, Zav'yalov VP. Protein V, a novel type-II IgG receptor from Streptococcus sp.: sequence, homologies and putative Fc-binding site. Gene X 1992; 120:27-32. [PMID: 1398120 DOI: 10.1016/0378-1119(92)90005-a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
We have cloned and sequenced the Fc-receptor-encoding gene, fcrV, from a group G streptococcus. Considerable similarity was revealed between the FcRV, FcRA76 and M proteins of group A streptococci in their signal sequences and 3' termini, and between the Fc-binding regions of FcRV and FcRA76. The promoter and terminator regions showed no homology with those of the fcrA76 and M protein-encoding genes. The A1-A4 domains of FcrV (protein V) exhibit a heptapeptide repeat motif which is characteristic of alpha-helical coiled-coil proteins. The sequence, Ser-Asn-Arg-Ala-Ala, in the outer position, 'f' of each domain is highly conserved and may be involved in FcR-IgG interactions.
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Affiliation(s)
- Smirnov OYu
- Institute of Immunology, State Concern Biopreparation, Moscow Region, Russia
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