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Wildlife omnivores and herbivores as a significant vehicle of multidrug-resistant and pathogenic Escherichia coli strains in environment.
Environmental Microbiology Reports ( IF 3.6 ) Pub Date : 2020-09-16 , DOI: 10.1111/1758-2229.12886
Marcelina Osińska 1 , Aneta Nowakiewicz 1 , Przemysław Zięba 2 , Sebastian Gnat 1 , Dominik Łagowski 1
Affiliation  

The phenomenon of resistance of Escherichia coli strains in free‐living animals has been constantly expanding in recent years. However, the data are still fragmented and, due to the growing threat to public health, there is a constant need to search for and analyse new reservoirs and indicate their role and importance in the circulation of resistance genes in the environment. Therefore, the target group in this study were free‐living non‐predatory animals as reservoirs of drug‐resistant and potentially virulent E. coli strains. We obtained 70 different isolates, including 71.4% of multidrug‐resistant strains. In strains isolated from all species of animals, we determined high resistance to ampicillin (95.7%), tetracycline (64.3%), streptomycin (51.4%) and chloramphenicol (38.6%). Every third of the E. coli‐positive individual was a carrier of more than one resistant clone. Moreover, 11.4% of isolates among the resistant strains had the ExPEC, ETEC, or EHEC pathotype. Our study confirmed that not only free‐living predatory animals are reservoirs of resistance but also many synanthropic species of herbivores and omnivores contribute substantially to the spread of resistant and virulent E. coli strains.

中文翻译:

野生杂食动物和食草动物在环境中是耐多药和致病性大肠杆菌菌株的重要载体。

近年来,自由活动动物中大肠杆菌菌株的耐药现象一直在不断扩大。但是,数据仍然是零散的,并且由于对公共卫生的威胁越来越大,始终需要寻找和分析新的储层,并指出它们在环境中抗性基因循环中的作用和重要性。因此,本研究的目标人群是将非掠食性动物作为耐药性和潜在强毒E的宿主。大肠杆菌株。我们获得了70种不同的菌株,包括71.4%的多药耐药菌株。在从所有动物物种分离的菌株中,我们确定了对氨苄西林(95.7%),四环素(64.3%),链霉素(51.4%)和氯霉素(38.6%)的高抗性。E的三分之一。大肠杆菌阳性个体是多个抗性克隆的携带者。此外,在抗性菌株中有11.4%的分离株具有ExPEC,ETEC或EHEC致病型。我们的研究证实,不仅自由生存的掠食性动物是抗药性的储藏库,而且许多食草动物和杂食性的合人类物种也极大地促进了抗性和强毒E的传播。大肠杆菌菌株。
更新日期:2020-11-25
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