The Emergence of Antimicrobial Resistance and Virulence Characteristics in Enterococcus Species Isolated from Bovine Milk

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Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal de Goiás (UFG)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversity of the State of Santa Catarina-
Autor(es): dc.contributorFederal University of Campina Grande-
Autor(es): dc.creatorPaschoalini, Beatriz Rizzo-
Autor(es): dc.creatorNuñez, Karen Vanessa Munive-
Autor(es): dc.creatorMaffei, Juliana Takahashi-
Autor(es): dc.creatorLangoni, Hélio-
Autor(es): dc.creatorGuimarães, Felipe Freitas-
Autor(es): dc.creatorGebara, Clarice-
Autor(es): dc.creatorFreitas, Natylane Eufransino-
Autor(es): dc.creatordos Santos, Marcos Veiga-
Autor(es): dc.creatorFidelis, Carlos Eduardo-
Autor(es): dc.creatorKappes, Roberto-
Autor(es): dc.creatorGonçalves, Mônica Correia-
Autor(es): dc.creatorSilva, Nathália Cristina Cirone-
Data de aceite: dc.date.accessioned2025-08-21T15:38:21Z-
Data de disponibilização: dc.date.available2025-08-21T15:38:21Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/antibiotics12081243-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/302913-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/302913-
Descrição: dc.descriptionEnterococcus spp., including E. faecalis and E. faecium, pose risks to dairy farms as opportunistic pathogens. The study evaluates antimicrobial resistance (AMR) and virulence characteristics of Enterococcus spp. isolated from bovine milk. Bile esculin agar was used to assess 1471 milk samples, followed by colony identification, gram staining, catalase tests, and 45 °C incubation. PCR analysis targeted E. faecalis and E. faecium in characteristic Enterococcus spp. colonies, with MALDI-TOF used for negative samples. Multiple tests, including disk diffusion, chromogenic VRE agar for vancomycin resistance, Vancomycin Etest® for MIC determination, and PCR for virulence factors (cylA, esp, efaA, ace, asa1, gelE, and hyl genes), were performed. Out of 100 identified strains, E. durans (30.66%), E. faecium (26.28%), and E. faecalis (18.25%) were predominant. AMR in Enterococcus spp. varied, with the highest rates against rifampicin (27%), tetracycline (20%), and erythromycin (18%). Linezolid (5%), vancomycin, ciprofloxacin, and teicoplanin (3% each) had lower prevalence. E. faecium and E. faecalis showed high AMR to rifampicin, erythromycin, and tetracycline. Thirty-two strains (18.98%) grew on VRE Chromoselect agar, while 4 (2 E. faecalis and 2 E. faecium) showed vancomycin resistance by MIC values. E. faecalis carried gelE (45.5%) and asa1 (36%), and E. gallinarum had 9.1% with the asa1 gene. Detecting resistant Enterococcus in bovine milk supports control strategies for enterococci on dairy farms, highlighting AMR concerns in the food chain.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionDepartment of Food Science and Nutrition School of Food Engineering University of Campinas, SP-
Descrição: dc.descriptionDepartment of Animal Production and Preventive Veterinary Medicine Faculty of Veterinary Medicine and Animal Science São Paulo State University, SP-
Descrição: dc.descriptionFood Research Center School of Veterinary Medicine and Animal Science Federal University of Goiás, Campus Road, GO-
Descrição: dc.descriptionDepartment of Animal Nutrition and Production School of Veterinary Medicine and Animal Sciences University of São Paulo (USP), SP-
Descrição: dc.descriptionCenter for Agroveterinary Sciences University of the State of Santa Catarina, SC-
Descrição: dc.descriptionCenter for Agro-Food Science and Technology Federal University of Campina Grande, PB-
Descrição: dc.descriptionDepartment of Animal Production and Preventive Veterinary Medicine Faculty of Veterinary Medicine and Animal Science São Paulo State University, SP-
Descrição: dc.descriptionCNPq: 141320/2018–4-
Idioma: dc.languageen-
Relação: dc.relationAntibiotics-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectE. faecalis-
Palavras-chave: dc.subjectE. faecium-
Palavras-chave: dc.subjectVancomycin-resistant enterococci (VRE)-
Palavras-chave: dc.subjectvirulence factors-
Título: dc.titleThe Emergence of Antimicrobial Resistance and Virulence Characteristics in Enterococcus Species Isolated from Bovine Milk-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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