Aminoglycoside-modifying Enzymes in Carbapenem-resistant <i>Pseudomonas aeruginosa</i> Clinical Isolates
MEDITERRANEAN JOURNAL OF INFECTION MICROBES AND ANTIMICROBIALS, 2022 (ESCI)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2022
- Doi Numarası: 10.4274/mjima.galenos.2022.2022.37
- Dergi Adı: MEDITERRANEAN JOURNAL OF INFECTION MICROBES AND ANTIMICROBIALS
- Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI)
- Anahtar Kelimeler: Aminoglycoside-modifying enzyme, P.aeruginosa, carbapenem resistance, MECHANISMS, PREVALENCE
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Ondokuz Mayıs Üniversitesi Adresli: Evet
Özet
Introduction: Aminoglycosides are the drug of choice for the treatment of Pseudomonas aeruginosa infections. Aminoglycoside resistance in P. aeruginosa often occurred via acquired aminoglycoside-modifying enzymes (AMEs). In this study, we aimed to investigate the presence of AME in P. aeruginosa in carbapenem-resistant and carbapenem-susceptible isolates. Materials and Methods: A total of 98 isolates of P. aeruginosa from various clinical samples presenting resistance to amikacin and/or gentamicin were included in this study. Fifty-four were carbapenem-resistant isolates. Polymerase chain reaction amplification of six genes for AMEs (aac(6')-Ib,aac(6')-IIa, aac(3')-IIa, aph(3')-Ia,aph(3')-VIa, ant(2'')-Ia) was performed. Results: The most frequent AME gene was aac(6')-Ib (n=13, 13.2%), followed by ant(2'')-Ia (n=7, 7.1%). aac(6')-Ib was the most common AME in carbapenem-resistant isolates (11/54, 20.3%); however ant(2'')-Ia was the most common AMEs in carbapenem-susceptible isolates (4/44, 9%). In 74 of the isolates, none of the AME genes was detected. aac(6')-Ib positivity in carbapenem-resistant isolates was significantly higher than that in carbapenem-susceptible isolates. Conclusion: Aminoglycosides are one of the drug of choice in carbapenem-resistant P. aeruginosa isolates. However, given the transfer of multidrug resistance determinants, the presence of AME was significantly higher in carbapenem-resistant isolates, and monitoring resistance determinants among Gram-negative bacteria is crucial.