Gram-negative bacteria

Objective. To evaluate resistance rates to carbapenems and III–IV generation cephalosporins among gramnegative bacteria, including production of carbapenemases and extended-spectrum beta-lactamases (ESBL). Materials and Methods. A total of 460 gram-negative bacteria isolated from hospitalized patients aged 1 to 85 years from 8 medical institutions of Rostov-on-Don and the region from April 2018 to December 2019 were tested by conventional microbiological methods. The most common acquired carbapenemases genes were determined by real-time PCR using commercial kits (Central Research Institute of Epidemiology, Russia).

The rapid spread of multidrug-resistant Gram-negative bacteria in hospital settings all over the world makes a demand for the new options to overcome antimicrobial resistance. Ceftazidime-avibactam is the first approved antibiotic that contains a new …

Objective. To assess an incidence rate of carbapenemase-producing Gram-negative bacteria isolated from patients in the RRCRST. Materials and Methods. The clinical Gram-negative isolates obtained from patients hospitalized to the RRCRST over the period of February 2014 to April 2016 were tested. A screening for carbapenem resistance was performed by culture on chromogenic media, and species identification was made using MALDI-TOF massspectrometry. Susceptibility of Gram-negative bacteria to antimicrobial agents was determined using VITEK-2.

β-Lactamases are represented by extensive range of genetically and functionally different enzymes that are able to destroy β-lactams that leads to development of resistance to these antibiotics in β-lactamases producing bacteria. Intrinsic production …

Production of extended-spectrum β-lactamases (ESBL) is the one of most widespread and clinically significant mechanism of resistance to modern β-lactams in members of the family Enterobacteriaceae. But the effectiveness of routine methods of …