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Environmental antimicrobial resistance gene detection from wild bird habitats using two methods: A commercially available culture-independent qPCR assay and culture of indicator bacteria followed by whole-genome sequencing
US Geol Survey, USA.
US Geol Survey, USA.
Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences. Region Kalmar County, Sweden.ORCID iD: 0000-0002-1707-2655
Linköping University, Sweden;Region Kalmar County, Sweden.
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2023 (English)In: Journal of Global Antimicrobial Resistance, ISSN 2213-7165, E-ISSN 2213-7173, Vol. 33, p. 186-193Article in journal (Refereed) Published
Abstract [en]

Objectives: A variety of methods have been developed to detect antimicrobial resistance (AMR) in differ-ent environments to better understand the evolution and dissemination of this public health threat. Com-parisons of results generated using different AMR detection methods, such as quantitative PCR (qPCR) and whole-genome sequencing (WGS), are often imperfect, and few studies have analysed samples in parallel to evaluate differences. In this study, we compared bacterial culture and WGS to a culture-independent commercially available qPCR assay to evaluate the concordance between methods and the utility of each in answering research questions regarding the presence and epidemiology of AMR in wild bird habitats.Methods: We first assessed AMR gene detection using qPCR in 45 bacterial isolates from which we had existing WGS data. We then analysed 52 wild bird faecal samples and 9 spatiotemporally collected water samples using culture-independent qPCR and WGS of phenotypically resistant indicator bacterial isolates.Results: Overall concordance was strong between qPCR and WGS of bacterial isolates, although concor-dance differed among antibiotic classes. Analysis of wild bird faecal and water samples revealed that more samples were determined to be positive for AMR via qPCR than via culture and WGS of bacterial isolates, although qPCR did not detect AMR genes in two samples from which phenotypically resistant isolates were found.Conclusions: Both qPCR and culture followed by sequencing may be effective approaches for characteris-ing AMR genes harboured by wild birds, although data streams produced using these different tools may have advantages and disadvantages that should be considered given the application and sample matrix.Published by Elsevier Ltd on behalf of International Society for Antimicrobial Chemotherapy. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ )

Place, publisher, year, edition, pages
Elsevier, 2023. Vol. 33, p. 186-193
Keywords [en]
Antibiotic, Bird, Environmental, Quantitative PCR, Resistance, Wildlife
National Category
Microbiology Microbiology in the medical area
Research subject
Ecology, Zoonotic Ecology
Identifiers
URN: urn:nbn:se:lnu:diva-121048DOI: 10.1016/j.jgar.2023.03.009ISI: 000984746900001PubMedID: 36972752Scopus ID: 2-s2.0-85152890191OAI: oai:DiVA.org:lnu-121048DiVA, id: diva2:1760562
Available from: 2023-05-30 Created: 2023-05-30 Last updated: 2023-09-07Bibliographically approved

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Woksepp, Hanna

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