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The objective of this study was phenotypic and genotypic characterization of antibacterial-resistant clinical strains isolated in Moscow Transplantology Intensive Care Unit in 2017-2019. Major strains among ( = 63) isolated from 30 patients were recognized as extensive drug-resistant ( = 55) pathogens, and remaining strains were recognized as multidrug-resistant ( = 8) pathogens. The beta-lactamase genes ( = 63), ( = 61), ( = 54), ( = 52), and ( = 2), as well as class 1 integrons ( = 19) carried gene cassette arrays A4 ( = 2), A1C ( = 6), BA1 ( = 9), A15A1 ( = 3), and A12 ( = 1) were identified in the strains. All strains carried four virulence genes: G, H, , and S, but two strains had additionally gene. Six known sequence types (STs) of ST395 ( = 44), ST377 ( = 3), ST307 ( = 4), ST13 ( = 2), ST39 ( = 2), ST3346 ( = 1), and a novel sequence-type ST3551 ( = 7) were identified. Phylogenetic analysis showed that ST3551 belonged to the cluster of clonal group CG147, and the remaining six STs to the another cluster consisting of four subgroups. The emergence of genetic lines carrying epidemiologically significant beta-lactamase genes ST395, ST13, ST3346, ST3551, and ST39 was the first case of detection in Russia. The emergence of novel carbapenemase-producing genetic lines in Russia highlights the global negative tendency of multidrug-resistant pathogens spread in high-technological medical centers.
This article was published in the following journal.
Name: Microbial drug resistance (Larchmont, N.Y.)
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Production of new arrangements of DNA by various mechanisms such as assortment and segregation, CROSSING OVER; GENE CONVERSION; GENETIC TRANSFORMATION; GENETIC CONJUGATION; GENETIC TRANSDUCTION; or mixed infection of viruses.
Cell lines whose original growing procedure consisted being transferred (T) every 3 days and plated at 300,000 cells per plate (J Cell Biol 17:299-313, 1963). Lines have been developed using several different strains of mice. Tissues are usually fibroblasts derived from mouse embryos but other types and sources have been developed as well. The 3T3 lines are valuable in vitro host systems for oncogenic virus transformation studies, since 3T3 cells possess a high sensitivity to CONTACT INHIBITION.
The discipline studying genetic composition of populations and effects of factors such as GENETIC SELECTION, population size, MUTATION, migration, and GENETIC DRIFT on the frequencies of various GENOTYPES and PHENOTYPES using a variety of GENETIC TECHNIQUES.
Macromolecular molds for the synthesis of complementary macromolecules, as in DNA REPLICATION; GENETIC TRANSCRIPTION of DNA to RNA, and GENETIC TRANSLATION of RNA into POLYPEPTIDES.
The phenotypic manifestation of a gene or genes by the processes of GENETIC TRANSCRIPTION and GENETIC TRANSLATION.
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