Klebsiella pneumoniae

Infective endocarditis caused by Klebsiella pneumoniae in a patient with non ST elevation myocardial infarction

A rare clinical case of native aortic valve infective endocarditis (IE) caused by Klebsiella pneumoniae in a 56-year old man without known risk factors predisposing to the development of IE is presented. Diagnosis of IE in this patient was a …

Epidemiology and impact of colonization by multidrug-resistant Gram-negative bacteria on bloodstream infections in early phase of allogeneic hematopoietic stem cell transplantation

Objective. To study epidemiology and impact of colonization by multidrug-resistant Gram-negative bacteria (MDRGNB) on bloodstream infections (BSI) during allogeneic hematopoietic stem cell transplantation (allo-HSCT). Materials and Methods. The retrospective study included 288 patients received the first allo-HSCT between 2018 and 2019. The median age was 32 (18–66) years, male – 53% (n = 152). The majority of patients had acute leukemia – 62% (n = 178) and received transplant from matched unrelated – 42% (n = 120) or haploidentical donor – 26% (n = 75).

Phenotypic and genetic characteristics of antimicrobial resistance of Klebsiella pneumoniae clinical isolates in hospitals of Nizhny Novgorod

Objective. To study in vitro antimicrobial resistance and prevalence of the most clinically important carbapenemases genes in Klebsiella pneumoniae clinical isolates in Nizhny Novgorod. Materials and Methods. A total of 238 K. pneumoniae clinical isolates from upper and lower respiratory tracts, abdominal cavity, urogenital tract, and wound discharge were tested in this study. Species identification was done using WalkAway 96 analyzer (Siemens, Germany) with POS Combo Type 20 tablets (Beckman Coulter, USA) and Multiscan FC spectrophotometer (Thermo Scientific, Finland) with Microlatest tablets (PLIVA-Lachema, Czech Republic).

Influence of different antibiotic groups on the development of mutational resistance to colistin among Klebsiella pneumoniae

Objective. To determine the concentration of colistin, preventing the selection of colistin-resistant mutants of K. pneumoniae, and to evaluate the effect of antibiotics of different groups on the development of mutational resistance to colistin. Materials and Methods. Minimum inhibitory concentrations (MIC) of colistin were determined for 88 K. pneumoniae strains by the method of serial microdilutions in broth, and carbapenemase genes were detected. The selection of colistin-resistant subpopulations was performed on cation-adjusted MüllerHinton agar (MHA) with the addition of 16 mg/l colistin.

Potentiation of antimicrobial activity of colistin with antibiotics of different groups against multidrug- and extensively drug-resistant strains of Klebsiella pneumoniae, Acinetobacter baumannii and Pseudomonas aeruginosa

Objective. To reveal antibiotics being capable of potentiating the antimicrobial activity of colistin against multidrug- and extensively drug-resistant strains of Klebsiella pneumoniae, Acinetobacter baumannii and Pseudomonas aeruginosa. Materials and Methods. The minimum inhibitory concentrations (MIC) of colistin alone and in combination with fixed concentrations of antibiotics of different groups were determined for 272 multidrug- and extensively drug-resistant strains of K. pneumoniae, A. baumannii and P. aeruginosa. Bactericidal activity of colistin, carbapenems, clarithromycin and their combinations were also determined at fixed PK/PD breakpoint concentrations of antibiotics.

Resistance of carbapenemase-producing Klebsiella pneumoniae isolated from patients with orthopedic infection

Objective. To evaluate the resistance rate and production of carbapenemases in Klebsiella pneumoniae with phenotypic resistance to carbapenems isolated from patients with orthopedic infection. Materials and Methods. The materials for the study were tissue samples, aspirates and removed orthopedic devices of patients with orthopedic infection at the Vreden Russian Research Institute of Traumatology and Orthopedics, between 2017 and 2019. K. pneumoniae strains were identified in Microlatest by iEMS ReaderMF. These strains were tested for susceptibility to 15 antimicrobial agents by disk diffusion methods, as described by the EUCAST.

The reasons why Klebsiella pneumoniae becomes a leading opportunistic pathogen

This review provides an analysis of causes why Klebsiella pneumoniae takes a leading place among opportunistic human bacteria. The review includes the history of K. pneumoniae studies, microbiological properties and various Klebsiella-associated …

Application of AMRmap: «from the general to the specific» approach by the example of Klebsiella pneumoniae

The options for the use of «Plot By» tab in the web platform AMRmap are reviewed in the article. Description of some functionality is supported by the specific examples, and Klebsiella pneumoniae was selected as a study object. The analysis elements …

Characterization of genetic diversity of the Klebsiella pneumoniae strains in a Moscow tertiary care center using next-generation sequencing

Objective. To study genetic diversity of Klebsiella pneumoniae strains obtained in the National Medical and Surgical Center named after N.I. Pirogov (Moscow) using next-generation sequencing. Materials and Methods. A total of 19 isolates of K. pneumoniae were included in the study (18 – from patients and 1 – from nosocomial environment). The strains were isolated from January 30 to October 9, 2017 and phenotypically showed multi-drug resistance. DNA sequencing of the strains was performed on the Illumina HiSeq1500 instrument using the Illumina HiSeq PE Rapid Cluster Kit v2 and Illumina HiSeq Rapid SBS Kit v2 kits.

Susceptibility to antibiotic combinations among nosocomial carbapenemase-producing Gram-negative bacteria isolated in Belarus

Objective. To assess a susceptibility to antibiotic combinations in nosocomial carbapenemase-producing Klebsiella pneumoniae, Pseudomonas aeruginosa and Acinetobacter baumannii isolates using a modified method of multiple combination bactericidal testing (MCBT). Materials and Methods. A total of 178 isolates (63 K. pneumoniae isolates, 31 P. aeruginosa isolates, 84 A. baumannii isolates) obtained in the 2013-2017 from hospitalized patients in 28 public health organizations in 4 Belarus regions were included in the study.