1. Characterization of SCCmec type IV methicillin-resistant Staphylococcus aureus clones increased in Japanese hospitals
- Author
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Yutaka Ito, Yukiyoshi Masaki, Susumu Nishinarita, Haruo Sakamoto, Norihisa Noguchi, Hidemasa Nakaminami, Miyuki Noguchi, Manami Shoshi, Ayumu Ito, Satsuki Okamoto, Shunsuke Takadama, Mariko Hasegawa, Kayoko Tsuchiya, Takeaki Wajima, Takeshi Fujii, Hiroshi Maruyama, and Chika Jono
- Subjects
0301 basic medicine ,Microbiology (medical) ,clone (Java method) ,Meticillin ,Molecular epidemiology ,SCCmec ,030106 microbiology ,General Medicine ,biochemical phenomena, metabolism, and nutrition ,Biology ,bacterial infections and mycoses ,medicine.disease_cause ,Microbiology ,Methicillin-resistant Staphylococcus aureus ,03 medical and health sciences ,0302 clinical medicine ,Staphylococcus aureus ,Genotype ,medicine ,Multilocus sequence typing ,030212 general & internal medicine ,medicine.drug - Abstract
Recently, the prevalence of staphylococcal cassette chromosome mec (SCCmec) type IV isolates, which are the major community-acquired methicillin-resistant Staphylococcus aureus (MRSA), have increased in Japanese hospitals. The aim of this study was to elucidate the detailed molecular epidemiological features of the SCCmec type IV clones in Japanese hospitals. When 2589 MRSA isolated from four hospitals in Tokyo, Japan between 2010 and 2014 were analysed, the proportion of SCCmec type IV overtook that of type II, which was the major type of hospital-acquired MRSA in 2014. Multilocus sequence typing showed that CC1 was the most predominant clone in the SCCmec type IV isolates. The clinical departments that the patients belonged to, pulsed-field gel electrophoresis analysis and antimicrobial susceptibility profiles suggested that the origin of the CC1-SCCmec type IV (CC1-IV) clone was a community setting. Our data show that the CC1-IV clone is becoming a predominant MRSA clone in Japanese hospitals.
- Published
- 2018