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Genetic relatedness of methicillin-resistant Staphylococcus pseudintermedius (MRSP) isolated from a dog and the dog owner
Ist Teil von
Research in veterinary science, 2011-12, Vol.91 (3), p.e25-e27
Ort / Verlag
England: Elsevier India Pvt Ltd
Erscheinungsjahr
2011
Quelle
Access via ScienceDirect (Elsevier)
Beschreibungen/Notizen
In the present study four methicillin-resistant
Staphylococcus pseudintermedius (MRSP) strains isolated from a dog (
n
=
3) and the anterior nares of the dog owner (
n
=
1) were investigated by conventional and molecular methods. The species identity of the four
S. pseudintermedius strains was confirmed by conventional methods, by PCR mediated amplification of
S. intermedius/
S. pseudintermedius specific segments of thermonuclease encoding gene
nuc and by restriction fragment length polymorphism analysis of phosphoacetyltransferase encoding gene
pta. Investigation of the four
S. pseudintermedius for toxinogenic potential revealed that all four strains were positive for the exfoliative toxin encoding gene
siet and the leukotoxin encoding genes
lukS,
lukF
. The oxacillin and penicillin resistance of the four
S. pseudintermedius strains could be determined by cultivation of the strains on oxacillin resistant screening agar base, ChromID MRSA Agar and Brilliance MRSA Agar and by multiplex PCR detecting the resistance genes
mecA and
blaZ. The genetic relatedness of the strains was studied by macrorestriction analysis of their chromosomal DNA using pulsed field gel electrophoresis (PFGE). According to PFGE all four
S. pseudintermedius strains represent an identical bacterial clone indicating a cross transmission between the dog and the dog owner.