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Avetisyan LR, Chernukha MY, Shaginyan IA, Kapranov NI, Siyanova EA, Medvedeva OS, Kondratieva EI, Alekseeva GV, Krasovsky SA, Usacheva MV, Amelina EL. [ANTIBIOTICS SENSITIVITY OF STAPHYLOCOCCUS AUREUS, PSEUDOMONAS AERUGINOSA AND BACTERIA OF BURKHOLDERIA CEPACIA COMPLEX, PERSISTING IN LUNGS OF PATIENTS WITH MUCOVISCIDOSIS (MV)]. Zh Mikrobiol Epidemiol Immunobiol 2015:3-10. [PMID: 26950982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
AIM Study the spectrum of resistance to antibiotics and its variability of Staphylococcus aureus, Pseudomonas aeruginosa and Burkholderia cepacia complex (BCC), persisting in lungs of MV patients. MATERIALS AND METHODS 312 strains of S. aureus, 213 strains of P. aeruginosa, 186 strains of BCC were studied. Monitoring of antibiotics sensitivity was carried out in strains, isolated from 30 patients with chronic S. aureus infection, from 22 patients with chronic BCC infection and from 21 patients with chronic pseudomonas infection. Interval of monitoring was from 14 days to 5 years 7 months. RESULTS Study of S. aureus, P. aeruginosa and BCC strains has shown, that 35 and 33.3% of cases of staphylococcus infection, 37 and 46% of pseudomonas infection in children and adults, respectively, 100% of BCC infections were determined by multi-resistant clones. Study of genotypically identical strains, isolated from a single patient at different stages, has shown a change in antibiotics sensitivity as a result of persistence. CONCLUSION Persisent infection of lungs in patients with MV is determined: by exchanging clones with varying antibiotics sensitivity or prolonged circulation of a single clone with a high degree of phenotypical and genotypical variability, that determine alteration of seeding of sensitive and resistant strains from the same patient during monitoring. This confirms the necessity of study of antibiotics sensitivity of strains for prescription of antibacterial therapy.
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Voronina AL, Chernukha MY, Shaginyan IA, Kunda MS, Avetisyan LR, Orlova AA, Lunin VG, Avakyan LV, Kapranov NI, Amelina EL, Chuchalin AG. [Characterization of genotypes for Burkholderia cepacia complex strains isolated from patients in hospitals of Russian Federation]. Mol Gen Mikrobiol Virusol 2013:22-30. [PMID: 24003509] [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: 06/02/2023]
Abstract
88 cultures of microorganisms referred to the Burkholderia cepacia complex (Bcc) during initial identification were analyzed by multilocus sequencing (Multilocus Sequence Typing, MLST). 13 genotypes (sequence type, ST) were detected, 9 of them (708, 709, 710, 711, 712, 714, 727, 728, 729) were identified for the first time. Two new alleles for the gene trpB (357, 358), one of the genes atpD (306) and gltB (352) were detected and registered. It was found that strains of 2 genotypes (711, 712) belong to the species B. multivorans, 1 (ST102) - B. contaminans, 1 (ST51) - B. stabilis, 1 (ST729) - B. vietnamiensis. Most strains of the sample, representing 8 genotypes (208, 241, 728, 727, 708, 709, 710, 714), belong to the species B. cenocepacia. Identified genotypes differ in the global spread of the world: 4 genotype (51, 102, 208, 241) have intercontinental distribution, 1 (712) - intra. It is shown that strains causing nosocomial infections, in most cases refer to genotypes 728 and 708. Epidemiologically significant in respect of patients with cystic fibrosis should recognize genotype 709, detected in strains isolated from patients in seven federal districts (FD) of Russia. The Bcc strains of genotypes 241 (B. cenocepacia) and 729 (B. vietnamiensis) were isolated from the patients of the Far Eastern FD. They are not typical for other FD Russia. The possibility of concomitant infection in cystic fibrosis patient with two genotypes 709 - epidemiologically significant and 708 - nosocomial, was indicated. The long-termpersistence of a single genotype strain in the organism of patients with cystic fibrosis was demonstrated as for Bcc species B. cenocepacia (ST 709), so for B. multivorans (ST712). The possibility of transferring the strain Bcc, typical for nosocomial environment to patient with cystic fibrosis at surgery was observed.
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Affiliation(s)
- A L Voronina
- Gamaleya Scientific Research Institute of Epidemiology and Microbiology, Ministry of Health and Social Development, Moscow, Russia
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Ermolaeva SA, Varfolomeev AF, Chernukha MY, Yurov DS, Vasiliev MM, Kaminskaya AA, Moisenovich MM, Romanova JM, Murashev AN, Selezneva II, Shimizu T, Sysolyatina EV, Shaginyan IA, Petrov OF, Mayevsky EI, Fortov VE, Morfill GE, Naroditsky BS, Gintsburg AL. Bactericidal effects of non-thermal argon plasma in vitro, in biofilms and in the animal model of infected wounds. J Med Microbiol 2011; 60:75-83. [DOI: 10.1099/jmm.0.020263-0] [Citation(s) in RCA: 260] [Impact Index Per Article: 20.0] [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] Open
Abstract
Non-thermal (low-temperature) physical plasma is under intensive study as an alternative approach to control superficial wound and skin infections when the effectiveness of chemical agents is weak due to natural pathogen or biofilm resistance. The purpose of this study was to test the individual susceptibility of pathogenic bacteria to non-thermal argon plasma and to measure the effectiveness of plasma treatments against bacteria in biofilms and on wound surfaces. Overall, Gram-negative bacteria were more susceptible to plasma treatment than Gram-positive bacteria. For the Gram-negative bacteria Pseudomonas aeruginosa, Burkholderia cenocepacia and Escherichia coli, there were no survivors among the initial 105 c.f.u. after a 5 min plasma treatment. The susceptibility of Gram-positive bacteria was species- and strain-specific. Streptococcus pyogenes was the most resistant with 17 % survival of the initial 105 c.f.u. after a 5 min plasma treatment. Staphylococcus aureus had a strain-dependent resistance with 0 and 10 % survival from 105 c.f.u. of the Sa 78 and ATCC 6538 strains, respectively. Staphylococcus epidermidis and Enterococcus faecium had medium resistance. Non-ionized argon gas was not bactericidal. Biofilms partly protected bacteria, with the efficiency of protection dependent on biofilm thickness. Bacteria in deeper biofilm layers survived better after the plasma treatment. A rat model of a superficial slash wound infected with P. aeruginosa and the plasma-sensitive Staphylococcus aureus strain Sa 78 was used to assess the efficiency of argon plasma treatment. A 10 min treatment significantly reduced bacterial loads on the wound surface. A 5-day course of daily plasma treatments eliminated P. aeruginosa from the plasma-treated animals 2 days earlier than from the control ones. A statistically significant increase in the rate of wound closure was observed in plasma-treated animals after the third day of the course. Wound healing in plasma-treated animals slowed down after the course had been completed. Overall, the results show considerable potential for non-thermal argon plasma in eliminating pathogenic bacteria from biofilms and wound surfaces.
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Affiliation(s)
- Svetlana A. Ermolaeva
- Gamaleya Research Institute of Epidemiology and Microbiology, Russian Academy of Medical Sciences, Moscow, Russia
| | - Alexander F. Varfolomeev
- Gamaleya Research Institute of Epidemiology and Microbiology, Russian Academy of Medical Sciences, Moscow, Russia
| | - Marina Yu. Chernukha
- Gamaleya Research Institute of Epidemiology and Microbiology, Russian Academy of Medical Sciences, Moscow, Russia
| | - Dmitry S. Yurov
- Gamaleya Research Institute of Epidemiology and Microbiology, Russian Academy of Medical Sciences, Moscow, Russia
| | - Mikhail M. Vasiliev
- Joint Institute of High Temperatures, Russian Academy of Sciences, Moscow, Russia
| | - Anastasya A. Kaminskaya
- Gamaleya Research Institute of Epidemiology and Microbiology, Russian Academy of Medical Sciences, Moscow, Russia
| | | | - Julia M. Romanova
- Gamaleya Research Institute of Epidemiology and Microbiology, Russian Academy of Medical Sciences, Moscow, Russia
| | - Arcady N. Murashev
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, Russia
| | - Irina I. Selezneva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Russia
| | - Tetsuji Shimizu
- Max Planck Institute for Extraterrestrial Physics, Munich, Germany
| | - Elena V. Sysolyatina
- Gamaleya Research Institute of Epidemiology and Microbiology, Russian Academy of Medical Sciences, Moscow, Russia
| | - Igor A. Shaginyan
- Gamaleya Research Institute of Epidemiology and Microbiology, Russian Academy of Medical Sciences, Moscow, Russia
| | - Oleg F. Petrov
- Joint Institute of High Temperatures, Russian Academy of Sciences, Moscow, Russia
| | - Evgeny I. Mayevsky
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Russia
| | - Vladimir E. Fortov
- Joint Institute of High Temperatures, Russian Academy of Sciences, Moscow, Russia
| | | | - Boris S. Naroditsky
- Gamaleya Research Institute of Epidemiology and Microbiology, Russian Academy of Medical Sciences, Moscow, Russia
| | - Alexander L. Gintsburg
- Gamaleya Research Institute of Epidemiology and Microbiology, Russian Academy of Medical Sciences, Moscow, Russia
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Avdeeva SV, Chernukha MU, Shaginyan IA, Tarantul VZ, Naroditsky BS. Human angiogenin lacks specific antimicrobial activity. Curr Microbiol 2006; 53:477-8. [PMID: 17106799 DOI: 10.1007/s00284-006-0033-6] [Citation(s) in RCA: 13] [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] [Received: 01/18/2006] [Accepted: 07/11/2006] [Indexed: 10/23/2022]
Abstract
The antimicrobial activities of commercially available human angiogenin were studied against two pathogens, namely, Candida albicans and Streptococcus pneumoniae. In contrast to the data published earlier, antimicrobial action of angiogenin was rather limited and comparable to that of bovine serum albumin.
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Affiliation(s)
- Svetlana V Avdeeva
- Gamaleya Research Institute of Epidemiology and Microbiology, Gamaleya Street 18, 123098, Moscow, Russia
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Abstract
Current tendencies and problems of molecular biology and its application in infectious diseases are discussed. Basic stages of the development of molecular epidemiology as a leading tool for epidemiological studies are reviewed. More than 30 years ago, molecular epidemiology was first used to study nosocomial infections. Special attention is given to the achievements of Russian scientists, especially in the discovery of Astrakhan spotted fever Rickettsia, noncultured forms of Vibrio cholerae, and the microorganism "Montezuma." Also, the development of PCR-based methods of identification and typing of Mycobacterium tuberculosis by Russian specialists and its significant role in strategies for diagnosing and treatment of tuberculosis are discussed. Now, the most important field of application of molecular biology methods is bacterial evolution, especially with regard to pathogenic microorganisms and emerging infections. Searching for the novel pathogenic agents, establishment of the infectious nature of diseases with unclear origin, and determining the precise mechanisms of pathogenicity are most intriguing issues. So, molecular biology should play a major role both in clinical and research fields.
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Affiliation(s)
- I V Tarasevich
- Gamaleya Research Institute of Epidemiology and Microbiology, Moscow, Russia 123098
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