First Report on vanA-Enterococcus faecalis Recovered from Soils Subjected to Long-Term Livestock Agricultural Practices in Azores Archipelago

Silva, Vanessa; Peixoto, Fernando Barbosa; Igrejas, Gilberto; Parelho, Carolina; Garcia, Patrícia; Carvalho, Isabel; Sousa, Margarida; Pereira, José Eduardo; Rodrigues, Armindo; Poeta, Patrícia

doi:10.1007/s41742-018-0068-0

Cited by 7 publications

(8 citation statements)

References 29 publications

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“… Percentages of vancomycin-resistant enterococci reported in Portugal in different settings: food-producing animals, environmental, wastewater treatment plants, wild animals, horses, and pets [ 26 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 ]. …”

Section: Figurementioning

confidence: 99%

Enterococci, from Harmless Bacteria to a Pathogen

et al. 2020

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Enterococci are gastrointestinal commensals whose hardiness allowed them to colonize very diverse environments, including soils, water, food, and feed. This ability to overcome adverse conditions makes enterococci problematic once they colonize hospital niches. Together with the malleability of their genomes, the capacity to acquire and disseminate determinants of antibiotic resistance has contributed to converting what was once just another opportunistic pathogen into a first-class clinical problem. This review discusses the dimension of the emergence of enterococcal resistance to key antimicrobial agents, the dissemination of this resistance, and its significance in terms of public health, with the aim of raising awareness of the need to devise and implement surveillance programs and more effective antibiotic stewardship.

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Section: Figurementioning

confidence: 99%

Enterococci, from Harmless Bacteria to a Pathogen

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“…A few studies have been performed to investigate the prevalence of ESBLs recovered from soil environment, particularly in farming and livestock grazing soils (Hartmann et al 2012;Blaak et al 2015). There is only one study that analyzed the antibiotic resistance and ARGs in soils in Azores Archipelago; however, this study is not based on E. coli strains (Silva et al 2018). Thus, our study aimed to characterize the antibioticresistant profiles in E. coli isolates, phenotypically and genotypically, and to determinate the existence of ESBL-producing E. coli recovered from distinct soils subjected to long-term livestock practices in Azores Archipelago.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of ESBL-producing Escherichia coli in soils subjected to livestock grazing in Azores archipelago: an environment-health pollution issue?

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Antibiotics are successful drugs used in human and animal therapy; however, they must be considered as environmental pollutants. This study aims to isolate and characterize the extended-spectrum β-lactamase (ESBL) producing Escherichia coli soil from Azores Archipelago subjected to livestock agricultural practices. Twenty-four soil samples were collected from three different pasture systems with different number of cattle heads, and from a control site. Antibiotic susceptibility method was performed by Kirby-Bauer disk diffusion method against 16 antibiotics, and the presence of genes encoding lactamases, antimicrobial resistance genes, virulence factors, and phylogenetic groups was determined by polymerase chain reaction (PCR). Nine ESBLs were recovered from the three grazing sites, and all isolates presented the beta-lactamase genes bla CTX-M-3 and bla SHV . E. coli isolates were resistance to tetracycline and streptomycin and harbored the tetB, strA, and strB genes. One isolate also showed resistance to sulfonamides, and the genes sul1 and sul2 were detected. The isolates were grouped into the following phylogenic groups: B1 (n = 6), D (n = 2), and A (n = 1). The presence of antibiotics and resistance genes in soils may be the source to the development of antimicrobial resistance, which may have negative consequences in human and animal health.

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“…Carnobacteria and Vagococcus remained associated with marine hosts [17], whereas most enterococci relate to the gut of terrestrial animals (mammals, birds, reptiles, and insects) [17][18][19]. As a result of their evolution towards hardiness, members of this genus have been found in soils [20,21], waters [22], plants [21,23], hospital environments [24], foods [8,25] and feeds [26,27], further to their association with human and animal microbiota. Enterococci do not sporulate; hence, their persistence in these seemingly hostile environments stems, in part, from their ability to enter a viable, non-culturable state [28], their notable resistance to starvation, and their capacity to withstand desiccation [17].…”

Section: The Genus Enterococcus-a Bacterial Group That Has Evolved Fomentioning

confidence: 99%

Current Trends of Enterococci in Dairy Products: A Comprehensive Review of Their Multiple Roles

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Câmara

et al. 2021

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As a genus that has evolved for resistance against adverse environmental factors and that readily exchanges genetic elements, enterococci are well adapted to the cheese environment and may reach high numbers in artisanal cheeses. Their metabolites impact cheese flavor, texture, and rheological properties, thus contributing to the development of its typical sensorial properties. Due to their antimicrobial activity, enterococci modulate the cheese microbiota, stimulate autolysis of other lactic acid bacteria (LAB), control pathogens and deterioration microorganisms, and may offer beneficial effects to the health of their hosts. They could in principle be employed as adjunct/protective/probiotic cultures; however, due to their propensity to acquire genetic determinants of virulence and antibiotic resistance, together with the opportunistic character of some of its members, this genus does not possess Qualified Presumption of Safety (QPS) status. It is, however, noteworthy that some putative virulence factors described in foodborne enterococci may simply reflect adaptation to the food environment and to the human host as commensal. Further research is needed to help distinguish friend from foe among enterococci, eventually enabling exploitation of the beneficial aspects of specific cheese-associated strains. This review aims at discussing both beneficial and deleterious roles played by enterococci in artisanal cheeses, while highlighting the need for further research on such a remarkably hardy genus.

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First Report on vanA-Enterococcus faecalis Recovered from Soils Subjected to Long-Term Livestock Agricultural Practices in Azores Archipelago

Cited by 7 publications

References 29 publications

Enterococci, from Harmless Bacteria to a Pathogen

Enterococci, from Harmless Bacteria to a Pathogen

Occurrence of ESBL-producing Escherichia coli in soils subjected to livestock grazing in Azores archipelago: an environment-health pollution issue?

Current Trends of Enterococci in Dairy Products: A Comprehensive Review of Their Multiple Roles

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