Detection of VIM and NDM-1 metallo-beta-lactamase genes in carbapenem-resistant Pseudomonas aeruginosa clinical strains in Bahrain (original) (raw)
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Pakistan BioMedical Journal, 2020
Pseudomonas aeruginosa is a widespread organism, caused severe nosocomial infection in human andassociated with multiple drug resistance (MDR) Objective: The present study was carried out to observecurrent antimicrobial resistant pattern of Pseudomonas aeruginosa in Lahore and to detect the Metallobeta-lactamase (MBL) gene in carbapenem resistant Pseudomonas aeruginosa Methods: By screening360 samples total 123 Pseudomonas aeruginosa was identified by standard microbiology techniques suchas microscopy and biochemical testing. The isolated Pseudomonas aeruginosa was evaluated for drugresistance by disc diffusion method and polymerase chain reaction (PCR) was used to identify thecarbapenem resistance causing gene (bla-VIM and bla-IMP) Results: Following antibiotic resistantpattern was observed, Gentamycin (59.00%), Ceftazidime (58.7%), Ceftriaxone (58.00%), Cefotazime(57.0%) and Ciprofloxacin (55.00%). Resistance rates to carbapenem group of antibiotics is Doripenem(30.5%) Meropenem (...
2020
Objectives: Metallo-beta-lactamases play a major role in the resistance of Pseudomonas aeruginosa to carbapenems. The aim of this study was the phenotypic and molecular detection of IMP and SPM carbapenemase genes in 100 carbapenem-resistant clinical isolates of P. aeruginosa. The isolates identified using standard microbiological tests, and their antibiotic susceptibility pattern determined by disk agar diffusion (Kirby Bauer) method. Phenotypic identification of Metallo-beta-lactamase-producing strains assessed by the combined disk test (CDT). Then, PCR was used to detect the presence of IMP and SPM genes.Results: The highest and lowest levels of antibiotic resistance were observed against gentamicin (40%) and piperacillin-tazobactam (13%), respectively. Besides, 40 isolates (40%) had the Multi-drug Resistant (MDR) phenotype, while 5 (12.5%) MDR isolates were resistant to all antibiotics tested. The results of the CDT showed that among 43 carbapenem non-susceptible clinical isolat...
Diagnostic Microbiology and Infectious Disease, 2007
Seventy-two isolates of carbapenem-resistant Pseudomonas aeruginosa (CRPA) collected through the Taiwan Surveillance of Antimicrobial Resistance (TSAR) program in 2000 and 2002 were studied for carriage of metallo-β-lactamase (MBL), integrase genes, and integrons. Epidemiologic relatedness was determined using pulsed-field gel electrophoresis. The prevalence of the MBL genes among CRPA was 36.0% (9 of 25) in TSAR II and 17.0% (8/47) in TSAR III, with prevalence in surveyed hospitals being 19.1% (4/21, TSAR II) and 23.1% (6 of 26, TSAR III). The blaVIM-3 was detected in 15 of the 17 MBL-positive isolates; the remainder possessed blaVIM-2. The blaIMP was not evident. Class 1 integron was detected in all MBL-positive isolates; amplicon DNA sequences containing the blaVIM-3 regions were all identical. All MBL-positive isolates remained susceptible to colistin. Molecular typing revealed a predominant strain that comprised 14 of the isolates among the various surveyed hospitals.
Jundishapur Journal of Microbiology
Background: Pseudomonas aeruginosa is a unique Gram-negative opportunistic pathogen that is the leading cause of nosocomial infections. Objectives: This study aimed to investigate the prevalence of the main carbapenemase and extended-spectrum β-lactamases encoding genes in P. aeruginosa clinical isolates. Methods: In the present study, we collected 85 P. aeruginosa clinical isolates from different wards of three military hospitals in Tehran, Iran. We used disk diffusion and agar dilution methods to determine resistance to 12 different antibiotics in these isolates. Also, we assessed the blaIMP, blaVIM, blaSHV, blaTEM, and blaCTX genes by polymerase chain reaction methods among all isolates. Results: Our results revealed that all isolates were resistant to two antibiotics, and 76 (89.4%) of isolates were multidrug-resistant. We observed maximum and minimum resistance rates against ticarcillin (n = 77; 90.5%) and colistin (n = 7; 8.2%), respectively. The blaVIM, blaIPM, blaTEM, blaSHV...
Iraqi Journal of Medical Sciences
Background:Pseudomonas aeruginosa (P. aeruginosa) infections are clinical problem, it is a difficult to treat because of high resistant to many antibiotics (Multi-drug resistant) and a high risk of emergence of resistance during therapy. Carbapenems are therapeutic choice against infections caused by Gram-negative bacilli including strains of P. aeruginosa. New Delhi metallo-β-lactamase-1 (blaNDM-1) gene, an acquired class B carbapenemase. Dissemination predominantly involves transfer of the blaNDM-1 gene among promiscuous plasmids and clonal outbreaks. Bacteria with NDM-1 are typically resistant to nearly all antibiotics. Objective:To detect blaNDM-1 in the isolates of P. aeruginosa, which were recovered from various clinical samples from hospitalized patients in Wasit hospitals. Methods: This cross-sectional study involved 200 clinical samples were collected from three major hospitals in Wasit province. Samples were inoculated in Mackonkey and blood agar for primary isolation and ...
Iraqi journal of medical sciences, 2018
Background Pseudomonas aeruginosa (P. aeruginosa) infections are clinical problem, it is a difficult to treat because of high resistant to many antibiotics (Multi-drug resistant) and a high risk of emergence of resistance during therapy. Carbapenems are therapeutic choice against infections caused by Gramnegative bacilli including strains of P. aeruginosa. New Delhi metallo-β-lactamase-1 (blaNDM-1) gene, an acquired class B carbapenemase. Dissemination predominantly involves transfer of the blaNDM-1 gene among promiscuous plasmids and clonal outbreaks. Bacteria with NDM-1 are typically resistant to nearly all antibiotics. Objective To detect blaNDM-1 in the isolates of P. aeruginosa, which were recovered from various clinical samples from hospitalized patients in Wasit hospitals. Methods This cross-sectional study involved 200 clinical samples were collected from three major hospitals in Wasit province. Samples were inoculated in Mackonkey and blood agar for primary isolation and th...
Antimicrobial Agents and Chemotherapy, 2012
ABSTRACTOne hundred sixty-nine nonreplicate imipenem-resistantPseudomonas aeruginosastrains isolated in a large hospital on the coastal region of Croatia were studied. The most active antibiotics were colistin and amikacin. Most of the isolates were multiresistant. The most prevalent serotype was O12, followed by O11. Six strains carried theblaVIM-2gene located in a novel class 1 integron composed in its variable part of theblaVIM-2-blaoxa-10-ΔqacF-aacA4genes. Metallo-β-lactamase-producing strains belonged to sequence types ST235 and ST111.