Authors: L. Štempelová, I. Kubašová, D. Buj?áková, J. Ka?írová, J. Farbáková, M. Ma?ar, L. Karahutová and V. Strompfová
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Despite increasing interest to study skin microbiota with progressive methods, there are almost no data on staphylococcal species distribution on skin of healthy dogs available. Therefore we decide to characterize staphylococci isolated from eight different body sites (inner pinna, chin, nasal skin, back, axilla, abdomen, interdigital area and perianal region) of healthy canine skin. A total of 91 staphylococci were isolated from 30 dogs living in East Slovakia. Swabs of each dog were cultivated and colonies analysed using MALDI-TOF spectrometry. The vast majority of isolated staphylococci belonged to S. pseudintermedius species (48 %) followed by S. hominis (15 %) and S. aureus (10 %). S. haemolyticus, S. warneri, S. epidermidis, S. capitis, S. xylosus, S. pasteuri, S. intermedius and S. succinus were also isolated (<10 %). The most frequent resistance in staphylococcal isolates was observed for chloramphenicol (73 %) and penicillin (67 %) followed by erythromycin (42 %), tetracycline (26 %), and oxacillin (20 %). Multi-drug resistance was found in 50 % of isolates. All strains were gentamicin and vancomycin sensitive and were strong or moderate biofilm producers with high acid and alkaline phosphatase activities. Over half of strains were haemolytic (57 %) and produced gelatinase (54 %), DNAse (84 %) and lipase (64 %). It seems, multiresistant biofilm forming staphylococci could be commonly detected also in healthy dogs and could probably serve as reservoir for other dogs or owners because of constant exchange of their microbiota.
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