Raw cow milk bacterial consortium as bioindicator of circulating anti-microbial resistance (AMR)

Piras, C., Greco, V., Gugliandolo, E., Soggiu, A., Tilocca, B., Bonizzi, L., Zecconi, A., Cramer, R. ORCID: https://orcid.org/0000-0002-8037-2511, Britti, D., Urbani, A. and Roncada, P. (2020) Raw cow milk bacterial consortium as bioindicator of circulating anti-microbial resistance (AMR). Animal Feed Science and Technology, 10 (12). 2378. ISSN 0377-8401 doi: 10.3390/ani10122378

Abstract/Summary

The environment, including animals and animal products, is colonized by bacterial species that are typical and specific of every different ecological niche. Natural and human-related ecological pressure promotes the selection and expression of genes related to antimicrobial resistance (AMR). These genes might be present in a bacterial consortium but might not necessarily be expressed. Their expression could be induced by the presence of antimicrobial compounds that could originate from a given ecological niche or from human activity. In this work, we applied (meta)proteomics analysis of bacterial compartment of raw milk in order to obtain a method that provides a measurement of circulating AMR involved proteins and gathers information about the whole bacterial composition. Results from milk analysis revealed the presence of 29 proteins/proteoforms linked to AMR. The detection of mainly β-lactamases suggests the possibility of using the milk microbiome as a bioindicator for the investigation of AMR. Moreover, it was possible to achieve a culture-free qualitative and functional analysis of raw milk bacterial consortia.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/95667
Identification Number/DOI	10.3390/ani10122378
Refereed	Yes
Divisions	Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
Publisher	MDPI
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