Epidemiology and resistance mechanisms to imipenem in Klebsiella pneumoniae: A multicenter study
نویسندگان
چکیده
Four clinical isolates of imipenem-resistant Klebsiella pneumoniae were isolated from clinical patient specimens and from samples obtained from hygienic surveillance in our hospital. We examined their minimum inhibitory concentration (MIC) to various types of antibiotics, detected the carbapenemases by a modified Hodge test and analyzed the genotype and homogeneity. The enzyme, Klebsiella pneumoniae carbapenemase (KPC)-2, was detected in all four isolates and this was the main cause of their imipenem resistance. In addition, these four isolates also contained the extended-spectrum β-lactamase (ESBL) gene blaCTX-M-9 and the cephalosporinase (AmpC) gene blaDHA-1, which resulted in multidrug resistance.
منابع مشابه
Evaluation of antibiotic resistance associated with ophthalmic oqxAB pumps in Klebsiella pneumoniae causing urinary tract infection
Background: The urinary tract infection is the secondary most common human infection. Colon bacteria, including Klebsiella pneumonia, are the main cause of urinary tract infections. The occurrence of the antibiotic resistance is a major problem in the treatment of infections. Beta- lactamases and efflux pumps constitute the major defense mechanisms of antibiotic resistance of Klebsiella pneumon...
متن کاملشناسایی ایزوله های کلبسیلا پنومونیه دارای ژن blaCTX و تعیین مقاومت متقاطع آنها در بیماران بستری در بیمارستان
Background and Aim: Klebsiella pneumoniae is a member of the Enterobacteriaceae family. There is a global emergence of multidrug-resistant (MDR) strains of K. pneumoniae, a Gram-negative enteric bacterium that causes nosocomial and urinary tract infections. The aims of the present study were to identify the Klebsiella pneumoniae infections in hospitalized patients, characterization of blaCTX ge...
متن کاملAntibiotic Resistance Pattern and the Prevalence of Extended Spectrum Beta-Lactamases (ESBLs) in Urinary Isolates of Klebsiella Pneumoniae
Abstract Background and Objective: Klebsiella pneumoniae is an opportunistic nosocomial pathogen causing a variety of infections including urinary tract infections, pneumonia, septicemia, wound infections and infections in the intensive care units. Since the ESBL producing Klebsiella pneumoniae strains are increasingly causing urinary tract infections, we aim to assess antibiotic resistance pat...
متن کاملPrevalence of Class 1 Integron in Klebsiella Pneumoniae Isolates from Hospitals of Sanandaj, Iran
Background and Aims: Integrons as mobile genetic elements are located on the chromosome or on a plasmid in bacteria. Integrons play a main role in the dissemination of antibiotic resistance genes among different families of bacteria. The aim of this study was to identify the prevalence of class 1 integron in Klebsiella pneumoniae isolates from hospitals of Sanandaj, Kurdistan province, Iran. M...
متن کاملPhenotypic and Molecular Characterization of Multidrug Resistant Klebsiella pneumoniae Isolated from a University Teaching Hospital, China
The multidrug-resistant rate of Klebsiella pneumoniae has risen rapidly worldwide. To better understand the multidrug resistance situation and molecular characterization of Klebsiella pneumoniae, a total of 153 Klebsiella pneumoniae isolates were collected, and drug susceptibility test was performed to detect its susceptibility patterns to 13 kinds of antibiotics. Phenotypic tests for carbapene...
متن کامل