Prevalence of colistin resistance gene mcr-1 in Escherichia coli isolated from chickens in central China, 2014 to 2019 was written by Zhang, Wenting;Zhang, Tengfei;Wang, Chen;Liang, Guixing;Lu, Qin;Wen, Guoyuan;Guo, Yunqing;Cheng, Yiluo;Wang, Zui;Shao, Huabin;Luo, Qingping. And the article was included in Journal of Global Antimicrobial Resistance in 2022.Safety of 2-((((Z)-1-(2-Aminothiazol-4-yl)-2-(((2S,3S)-2-methyl-4-oxo-1-sulfoazetidin-3-yl)amino)-2-oxoethylidene)amino)oxy)-2-methylpropanoic acid This article mentions the following:
This study investigated the prevalence and characteristics of mcr-1-harbouring Escherichia coli isolated from chickens in central China from 2014 to 2019.A total of 1132 E. coli isolated from 1647 chicken swabs were analyzed for colistin susceptibility by broth microdilution method and prevalence of mcr-1 gene by PCR. The colistin-resistant E. coli isolates were typed by multi-locus sequence typing (MLST) and tested with 12 antimicrobial agents. The transconjugation assay was conducted for the mcr-1-pos. isolates using the transconjugant E. coli C600.Of the 1132 E. coli isolated from chickens, 131 isolates (11.6%) exhibited colistin resistance, and 51 isolates (4.5%) were mcr-1 pos. The mcr-1-pos. rate was quite low in 2014 (2.3%) and 2015 (1.7%), increased to peak in 2016 (12.6%) and 2017 (11.4%), and then decreased significantly in 2018 (1.7%) and 2019 (0.9%). The 131 colistin resistant isolates were assigned to 66 unique sequence types (STs), 27 of which contained mcr-1-pos. isolates. Compared with mcr-1-neg. E. coli, mcr-1-pos. E. coli showed higher resistance rates to nalidixic acid, ciprofloxacin, ceftriaxone, cefotaxime, and tetracycline. Furthermore, 30 of the 51 mcr-1 pos. isolates transduced their mcr-1 gene into E. coli C600, and 13 of the 30 transconjugants carried more than one replicon types. The mcr-1 pos. rate varied enormously during 2014-2019 in central China. The ban on colistin likely decreased the dissemination of mcr-1 in E. coli isolates from chickens. Multidrug-resistant trait is observed in mcr-1 pos. E. coli isolates and can be transferred into other transconjugants. In the experiment, the researchers used many compounds, for example, 2-((((Z)-1-(2-Aminothiazol-4-yl)-2-(((2S,3S)-2-methyl-4-oxo-1-sulfoazetidin-3-yl)amino)-2-oxoethylidene)amino)oxy)-2-methylpropanoic acid (cas: 78110-38-0Safety of 2-((((Z)-1-(2-Aminothiazol-4-yl)-2-(((2S,3S)-2-methyl-4-oxo-1-sulfoazetidin-3-yl)amino)-2-oxoethylidene)amino)oxy)-2-methylpropanoic acid).
2-((((Z)-1-(2-Aminothiazol-4-yl)-2-(((2S,3S)-2-methyl-4-oxo-1-sulfoazetidin-3-yl)amino)-2-oxoethylidene)amino)oxy)-2-methylpropanoic acid (cas: 78110-38-0) belongs to thiazole derivatives. Thiazoles are a class of five-membered rings containing nitrogen and sulfur with excellent antitumor, antiviral and antibiotic activities. The pyridine-type nitrogen in the thiazole ring deactivates the ring for electrophilic substitution reactions, which is further reduced in acid due to protonation of the thiazole ring.Safety of 2-((((Z)-1-(2-Aminothiazol-4-yl)-2-(((2S,3S)-2-methyl-4-oxo-1-sulfoazetidin-3-yl)amino)-2-oxoethylidene)amino)oxy)-2-methylpropanoic acid
Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica