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Using phenotype microarrays in the assessment of the antibioticsusceptibility profile of bacteria isolated from wastewaterin on-site treatment facilities
IVL Svenska Miljöinstitutet.
2018 (Engelska)Ingår i: Folia Microbiol., Vol. 62, nr 6Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Antibiotic resistance was identified by the World Health Organization as a major problem in terms of the environment and human and animal health (WHO 2014). Antibiotics get into soil and water, mainly through wastewater treatment plant effluents, leakage from waste storage containers, agricultural waste, and application of biosolids to fields.

The scope of the study was to apply Phenotype Biolog MicroArray (PM) technology to test the antibiotic sensitivity of the bacterial strains isolated from on-site wastewater treatment facilities. In the first step of the study, the percentage values of resistant bacteria from total heterotrophic bacteria growing on solid media supplemented with various antibiotics were determined. In the untreated wastewater, the average shares of kanamycin-, streptomycin-, and tetracycline-resistant bacteria were 53, 56, and 42%, respectively. Meanwhile, the shares of kanamycin-, streptomycin-, and tetracycline-resistant bacteria in the treated wastewater were 39, 33, and 29%, respectively.

To evaluate the antibiotic susceptibility of the bacteria present in the wastewater, using the phenotype microarrays (PMs), the most common isolates from the treated wastewater were chosen: Serratia marcescens ss marcescens, Pseudomonas fluorescens, Stenotrophomonas maltophilia, Stenotrophomonas rhizophila, Microbacterium flavescens, Alcaligenes faecalis ss faecalis, Flavobacterium hydatis, Variovorax paradoxus, Acinetobacter johnsonii, and Aeromonas bestiarum. The strains were classified as multi-antibiotic-resistant bacteria. Most of them were resistant to more than 30 antibiotics from various chemical classes. Phenotype microarrays could be successfully used as an additional tool for evaluation of the multi-antibiotic resistance of environmental bacteria and in preliminary determination of the range of inhibition concentration.

Ort, förlag, år, upplaga, sidor
2018. Vol. 62, nr 6
Identifikatorer
URN: urn:nbn:se:ivl:diva-3689OAI: oai:DiVA.org:ivl-3689DiVA, id: diva2:1572899
Anmärkning
A-rapport, A2294Tillgänglig från: 2021-06-24 Skapad: 2021-06-24

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Ejhed, Heléne
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IVL Svenska Miljöinstitutet

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