Antibiotic and metal resistance of Escherichia coli isolates from different environmental sources

Zentralblatt für Bakteriologie Mikrobiologie und Hygiene: I. Abt. Originale C: Allgemeine, angewandte und ?kologische Mikrobiologie Pub Date : 1982-07-01 DOI:10.1016/S0721-9571(82)80028-8

G. Cenci , G. Morozzi , F. Scazzocchio , A. Morosi

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引用次数: 5

Abstract

The resistance of 286 strains of E. coli isolated from surface waters, ground water and breeding effluents, to five antibiotics and three heavy metals, was compared with that of 104 E. coli strains of human origin.

The highest percentage of resistance among the environmental isolates was found in the strains obtained from river water. The percentage of resistance to different antibiotics was variable and found to be highest with respect to ampicillin, streptomycin and tetracycline.

Multiresistance phenomena were observed primarily with the isolates from surface waters and those of human origin.

Correlation analysis revealed that the resistance patterns of E. coli isolates from water environments are related, but only the antibiotic resistance pattern of river isolates was correlated with that of the strains of human origin. No correlation could be detected with respect to the antibiotic resistance patterns of environmental strains and strains isolated from breeding effluents.

Antibiotic and metal resistance were transferred to the recipient E. coli CSH 26 Nal strain by eleven of twelve strains tested: the transfer took place with the transconjugantdonor ratio varying from 10⁻¹ to 10⁻⁴, the ratio being higher for the metals than for the antibiotics.

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不同环境来源大肠杆菌分离株的抗生素和金属耐药性

对从地表水、地下水和养殖废水中分离得到的286株大肠杆菌与104株人源大肠杆菌对5种抗生素和3种重金属的耐药性进行了比较。环境分离株中，来自河水的菌株耐药率最高。对不同抗生素的耐药比例各不相同，氨苄西林、链霉素和四环素的耐药比例最高。多耐药现象主要见于地表水分离株和人类源分离株。相关性分析表明，水环境中分离的大肠杆菌的耐药模式是相关的，但只有河流分离株的耐药模式与人类源菌株的耐药模式相关。环境菌株和从养殖废水中分离的菌株的抗生素耐药模式之间没有相关性。对抗生素和金属的耐药性被12株大肠杆菌中的11株转移到受体CSH 26 Nal菌株上:转移发生在转共轭体-供体的比例从10−1到10−4之间，金属的比例高于抗生素。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Zentralblatt für Bakteriologie Mikrobiologie und Hygiene: I. Abt. Originale C: Allgemeine, angewandte und ?kologische Mikrobiologie

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