Emergence of a Plasmid-Encoded Resistance-Nodulation-Division Efflux Pump Conferring Resistance to Multiple Drugs, Including Tigecycline, in Klebsiella pneumoniae
2020; American Society for Microbiology; Volume: 11; Issue: 2 Linguagem: Inglês
10.1128/mbio.02930-19
ISSN2161-2129
AutoresLuchao Lv, Miao Wan, Cheng-Zhen Wang, Xun Gao, Qiwen Yang, Sally R. Partridge, Yang Wang, Zhiyong Zong, Yohei Doi, Jianzhong Shen, Peiyao Jia, Qianhua Song, Qianhui Zhang, Jun Yang, Xi Huang, Minggui Wang, Jian–Hua Liu,
Tópico(s)Plant Pathogenic Bacteria Studies
ResumoIn an era of increasing concerns about antimicrobial resistance, tigecycline is likely to have a critically important role in the treatment of carbapenem-resistant Enterobacteriaceae , the most problematic pathogens in human clinical settings—especially carbapenem-resistant K. pneumoniae . Here, we identified a new plasmid-borne RND-type tigecycline resistance determinant, TMexCD1-TOprJ1, which is widespread among K. pneumoniae isolates from food animals. tmexCD1-toprJ1 appears to have originated from the chromosome of a Pseudomonas species and may have been transferred onto plasmids by adjacent site-specific integrases. Although tmexCD1-toprJ1 still appears to be rare in human clinical isolates, considering the transferability of the tmexCD1-toprJ1 gene cluster and the broad substrate spectrum of TMexCD1-TOprJ1, further dissemination of this mobile tigecycline resistance determinant is possible. Therefore, from a “One Health” perspective, measures are urgently needed to monitor and control its further spread. The current low prevalence in human clinical isolates provides a precious time window to design and implement measures to tackle this.
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