Relationship of multidrug-resistant gene and extended-spectrum carbapenem-resistance in Staphylococcus aureus
- Authors
- Li, Yuan; Lee, Yonghyun; Seo, Yielhea; Hwang, Youjin
- Issue Date
- Dec-2019
- Publisher
- TECH SCIENCE PRESS
- Keywords
- MRSA; BlaTEM; BlaNDM; CCmec type II; Type IVA; Extended-spectrum carbapenems
- Citation
- BIOCELL, v.43, no.4, pp.263 - 269
- Journal Title
- BIOCELL
- Volume
- 43
- Number
- 4
- Start Page
- 263
- End Page
- 269
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/19523
- DOI
- 10.32604/biocell.2019.07664
- ISSN
- 0327-9545
- Abstract
- The aim of this study was to determine the relationship between phenotypic antimicrobial susceptibility patterns and extended-spectrum, carbapenem-resistance genes. A total of 109 clinical Staphilococcus aureus strains were subjected to 19 antimicrobial susceptibility tests. Resistance to methicillin (mecA), penicillin (blaTEM), and tetracycline (tetM) was detected. We compared the presence of the blaTEM genes with extended-spectrum, carbapenem-related genes and identified the types of SCCmec genes. Of 109 clinical S. aureus strains, 62 (56.88%) had methicillin resistance and 60 strains carried mecA. The prevalence of blaTEM and tetM genes was 81.65% and 37.61%, respectively. The most predominant SCCmec type was SCCmec type II 28/60 (46.67%), in 60 mecA-positive methicillin-resistant S. aureus (MRSA) isolates. The SCCmec prevalence rates were type IVA 30.00% (18/60), type IVb 8.33% (5/60), type IVd 6.67% (4/60), and non-typable 8.33% (5/60). Sixty of the 109 (55.05%) MRSA isolates were positive for extended-spectrum carbapenems (31/60) (51.67%), cephalosporins 40/60 ( 66.67%) and carbapenems 31/60 (51.67%). The predominant SCCmec type II demonstrated more carbapenem-resistance than the IVA, IVb and IVd types.
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