info:eu-repo/semantics/article
Biofilm formation and antimicrobial resistance genes of coagulase-negative staphylococci isolated from cows with mastitis in Argentina
Fecha
2017-04Registro en:
Srednik, Mariela Elizabeth; Tremblay, Yannick D.N.; Labrie, Josée; Archambault, Marie; Jacques, Mario; et al.; Biofilm formation and antimicrobial resistance genes of coagulase-negative staphylococci isolated from cows with mastitis in Argentina; Wiley Blackwell Publishing, Inc; FEMS Microbiology Letters; 364; 8; 4-2017; 1-8
0378-1097
CONICET Digital
CONICET
Autor
Srednik, Mariela Elizabeth
Tremblay, Yannick D.N.
Labrie, Josée
Archambault, Marie
Jacques, Mario
Fernandez Cirelli, Alicia
Gentilini, Elida Raquel
Resumen
Mastitis affects the health and welfare of dairy cows worldwide. Coagulase-negative staphylococci (CNS) are known to form biofilms and are increasingly recognized as a cause of persistent bovine intramammary infections. A total of 90 CNS isolated from cows with clinical and subclinical mastitis in Argentina from 2008 to 2014 were identified by PCR-RFLP using the gap gene. Standard microtiter plate assays were used to assess CNS biofilm formation, and Staphylococcus haemolyticus species formed the strongest biofilms. The presence of biofilm-associated genes icaA, bap and aap was detected in a few isolates, while embP, fbe, atlE and eno were present in the majority of isolates. Genes encoding resistance to β-lactams were detected among the isolates; blaZ, mecA and mecC were detected in 21, 4 and 1 isolate, respectively. Resistance to macrolides and lincosamides (n = 6) was attributable to ermB, ermC, mphC or mrsA or a combination of those genes. In this study, we identified CNS species involved in mastitis and provide information about pathogenicity and antimicrobial resistance, which is essential to design efficient strategies to control mastitis caused by CNS.