Antimicrobial resistance in staphylococci isolated from canine pyoderma
DOI:
https://doi.org/10.14295/cs.v3i3.94Keywords:
Staphylococcus, resistência a drogas, piodermite, cãesAbstract
This study aimed to determine the frequency as well as the antimicrobial susceptibility profile ofstaphylococci isolated from canine pyoderma. The isolated strains were identified by biochemicaltests and characterized by their susceptibility to antibacterial agents. The coagulase positive specieS. pseudintermedius was the most prevalent (82.4%, 28/34), followed by coagulase negative speciesS.chromogenes (6.0%, 2/34), S. epidermidis (2.9%, 1/34), S. warneri (2.9%, 1/34), S. sciuri (2.9%, 1/34)and S. haemolyticus (2.9%, 1/34). High rates of resistance to lincomycin, ampicillin, penicillin Gand tetracycline were observed, what is probably due to the frequent use of these antibiotics inveterinary practice. A 32.4% percentage of the strains has shown multi-drug resistance, includinga S. pseudintermedius strain resistant to oxacillin. All strains were sensitive to gentamycin, amikacin,tobramycin, chloranphenicol, imipenem, cephalothin and vancomycin. These results indicate theoccurrence of resistant staphylococci associated with canine pyoderma and point to the need ofcareful selection of antibiotics based on results of the susceptibility testing, in order to reduce theselection of multiresistant strains.
Resistência aos antimicrobianos em estafilococos isolados de piodermites canina
O presente estudo teve como objetivo determinar a ocorrência e o perfil de susceptibilidade aosantimicrobianos de cepas de estafilococos isoladas de piodermite canina. As linhagens isoladas foramidentificadas através de provas bioquímicas e caracterizadas em relação a sua susceptibilidadeaos agentes antibacterianos. A espécie coagulase positiva Staphylococcus pseudintermedius foia mais prevalente com 82.4% (28/34), seguida das espécies coagulase negativas S.chromogenescom 6.0% (2/34), S. epidermidis com 2.9% (1/34), S. warneri com 2.9% (1/34), S. sciuri com 2.9%(1/34) e S. haemolyticus com 2.9% (1/34). Foram evidenciados elevados índices de resistência alincomicina, a ampicilina, a penicilina G e a tetraciclina, o que provavelmente se deve ao usofrequente destes antibióticos na prática veterinária. Um percentual de 32.4% das cepas isoladasapresentou multiresistência, incluindo uma cepa de S. pseudintermedius resistente a oxacilina.Todas as cepas foram sensíveis a gentamicina, a amicacina, a tobramicina, ao cloranfenicol, aoimipenem, a cefalotina e a vancomicina. Estes resultados evidenciam a ocorrência de estafilococosresistentes associados a piodermites canina e alertam para a necessidade da escolha criteriosa daantibioticoterapia baseada nos resultados do antibiograma, visando reduzir a seleção de cepasmultiresistentes.
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