Resistance of Undisturbed Soil Microbiomes to Ceftriaxone Indicates Extended Spectrum β-Lactamase Activity

作者: Joao Gatica , Kun Yang , Eulyn Pagaling , Edouard Jurkevitch , Tao Yan

DOI: 10.3389/FMICB.2015.01233

关键词: Escherichia coliCeftriaxoneBiological activitySoil waterAntibiotic resistanceMicrocosmCephalosporinMicrobiologyAntibioticsBiology

摘要: Emergence and spread of antibiotic resistance, specifically resistance to third generation cephalosporins associated with extended spectrum β-lactamase (ESBL) activity, is one the greatest epidemiological challenges our time. In this study we addressed impact cephalosporin ceftriaxone on microbial activity bacterial community composition two physically chemically distinct undisturbed soils in highly regulated microcosm experiments. Surprisingly, periodical irrigation clinical doses did not affect their activity; only moderately impacted diversity (α β) soils. Corresponding slurry experiments demonstrated that capacity rapidly diminished presence soil, approximately 70% inactivation could be explained by biological activity. The nature degradation soil was supported amended model Escherichia coli strains sterile non-sterile absence ubiquitous ESBL genes (blaTEM, blaCTX-M blaOXA) DNA extracts. Collectively, these results suggest microbiomes stems from even more, broad-spectrum raising questions regarding scope implications ESBLs microbiomes.

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