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Advisor(s)
Abstract(s)
The appearance of Klebsiella pneumoniae strains producing extended-spectrum beta-lactamase (ESBL), and carbapenemase (KPC) has turned into a significant public health issue. ESBL- and KPC-producing K. pneumoniae's ability to form biofilms is a significant concern as it can promote the spread of antibiotic resistance and prolong infections in healthcare facilities. A total of 45 K. pneumoniae strains were isolated from human infections. Antibiograms were performed for 17 antibiotics, ESBL production was tested by Etest ESBL PM/PML, a rapid test was used to detect KPC carbapenemases, and resistance genes were detected by PCR. Biofilm production was detected by the microtiter plate method. A total of 73% of multidrug resistance was found, with the highest resistance rates to ampicillin, trimethoprim-sulfamethoxazole, cefotaxime, amoxicillin-clavulanic acid, and aztreonam. Simultaneously, the most effective antibiotics were tetracycline and amikacin. bla(CTX-M), bla(TEM), bla(SHV), aac(3)-II, aadA1, tetA, cmlA, catA, gyrA, gyrB, parC, sul1, sul2, sul3, bla(KPC), bla(OXA), and bla(PER) genes were detected. Biofilm production showed that 80% of K. pneumoniae strains were biofilm producers. Most ESBL- and KPC-producing isolates were weak biofilm producers (40.0% and 60.0%, respectively). There was no correlation between the ability to form stronger biofilms and the presence of ESBL and KPC enzymes in K. pneumoniae isolates.
Description
Keywords
Klebsiella pneumoniae extended-spectrum β-lactamase (ESBL) Klebsiella pneumoniae carbapenemase (KPC) Biofilm Antimicrobial resistance
Citation
Sabenca, Carolina; Costa, Eliana; Sousa, Sara; Barros, Lillian; Oliveira, Ana M.P.; Ramos, Sonia; Igrejas, Gilberto; Torres, Carmen; Poeta, Patrícia (2023). Evaluation of the ability to form biofilms in KPC-producing and ESBL-producing Klebsiella pneumoniae isolated from clinical samples. Antibiotics. ISSN 2079-6382. 12:7, p. 1-13
Publisher
MDPI