ESTUDO MICROBIOLÓGICO DAS CERATITES ULCERATIVAS EM CÃES

• DOI: 10.22533/at.ed.31019140816

• Palavras-chave: córnea, cultura, oftalmologia veterinária, úlcera.

• Keywords: cornea, culture, veterinary ophthalmology, ulcer.

• Abstract:

  The study was conducted from October 2017 to April 2018, at the Veterinary

  Hospital of the State University of Londrina, in Londrina, Parana. Thirty-two dogs with

  ulcerative keratitis were included in the study, from which 36 corneal samples were

  obtained using swab for bacterial and fungal isolation and antimicrobial susceptibility

  assessment. Bacterial growth was observed in 72.3% of the samples. Only one of

  the fungal cultures presented yeast growth. The results showed that 52.5% of the

  isolates were gram-positive and 47.5% were gram-negative bacteria. The predominant

  species was Staphylococcus intermedius group (20%), followed by Pseudomonas

  aeruginosa (17.5%). Neomycin was the most effective antimicrobial against the genus

  Staphylococcus in the antibiogram, showing efficacy of 87.5%- followed by gentamicin,

  with 80% sensitivity. Gram-negative bacteria was mainly susceptible to moxifloxacin,

  ciprofloxacin, neomycin and gentamicin, varying its sensitivity from 83.3% to 85.7%.

  A high percentage of bacterial resistance to tetracycline was observed in both grampositive

  and gram-negative groups, reaching indexes of 60%. Of the 40 bacterial isolates,

  six samples profiled unusual resistance in veterinary medicine, four of which being

  Staphylococcus spp. MRSP (methicillin resistant Staphylococcus pseudintermedius), a

  Pseudomonas aeruginosa CR (resistant to carbapenems), and a Klebsiella pneumoniae

  ESBL (producer of extended spectrum betalactamase). Neomycin and gentamicin

  were the antimicrobials that showed the best action against gram-positive and gramnegative

  bacteria, simultaneously.

• Número de páginas: 15