Sadek Mustafa, Nariya Hirofumi, Shimamoto Toshi, Kayama Shizuo, Yu Liansheng, Hisatsune Junzo, Sugai Motoyuki, Nordmann Patrice, Poirel Laurent, Shimamoto Tadashi
Medical and Molecular Microbiology, Faculty of Science and Medicine, University of Fribourg, 1700 Fribourg, Switzerland.
Food Hygiene and Control, Faculty of Veterinary Medicine, South Valley University, Qena 83511, Egypt.
Pathogens. 2020 Aug 22;9(9):687. doi: 10.3390/pathogens9090687.
We describe here the complete genome sequence of an ST279 coharbouring and recovered from uncooked beef patty in June 2017, Egypt. The tested isolate was resistant to carbapenem but susceptible to colistin (minimum inhibitory concentration (MIC), 0.5 μg/mL). The antimicrobial susceptibility profile and conjugation experiments were performed. The entire genome was sequenced by the Illumina MiniSeq and Oxford Nanopore methods. The and genes are carried on the same IncHI2/pMLST1 plasmid, pMS37a (Size of 270.9 kb). The gene was located within the physical boundaries demarcated by two insertion elements IS (upstream) and IS (downstream) but did not possess the downstream regulatory genes (/) which regulate the expression of . Therefore, the might be silently disseminated among carbapenem-resistant Enterobacterales. In addition to and , plasmid pMS37a harbored various antibiotic resistance genes including , Δ, , , To the best of our knowledge, this is the first report of a and -coharbouring isolate of food origin worldwide. The identification of a multidrug-resistant VIM-1 and positive isolate from food is worrisome as retail meat and meat products could serve as a vehicle for these MDR bacteria, which could be transferred between animals and humans through the food chain. It further highlights that Enterobacterales co-producing MCR and carbapenemases being found in the food chain indeed correspond to a One-Health issue, highlighting the need for serious steps to prevent their further dissemination.
我们在此描述一株于2017年6月从埃及未煮熟牛肉饼中分离出的携带ST279的完整基因组序列。所检测的分离株对碳青霉烯类耐药,但对黏菌素敏感(最低抑菌浓度(MIC)为0.5μg/mL)。进行了药敏试验和接合实验。采用Illumina MiniSeq和牛津纳米孔方法对整个基因组进行测序。blaVIM-1和mcr-1基因位于同一个IncHI2/pMLST1质粒pMS37a上(大小为270.9 kb)。blaVIM-1基因位于由两个插入元件IS(上游)和IS(下游)划定的物理边界内,但不具备调节blaVIM-1表达的下游调控基因(blaVIM-1/blaVIM-2)。因此,blaVIM-1可能在耐碳青霉烯类肠杆菌科细菌中悄然传播。除了blaVIM-1和mcr-1,质粒pMS37a还携带多种抗生素耐药基因,包括blaTEM、ΔblaSHV、blaCTX-M、qnrS、aadA。据我们所知,这是全球首例关于食品来源的同时携带blaVIM-1和mcr-1的分离株的报道。从食品中鉴定出一株多重耐药的VIM-1和mcr-1阳性肠杆菌科细菌令人担忧,因为零售肉类和肉制品可能成为这些多重耐药细菌的传播载体,它们可通过食物链在动物和人类之间传播。这进一步凸显了在食物链中发现同时产生MCR和碳青霉烯酶的肠杆菌科细菌确实对应一个“同一健康”问题,强调需要采取严肃措施防止它们进一步传播。