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Vet Microbiol. 2013 Dec 27;167(3-4):734-6. doi: 10.1016/j.vetmic.2013.09.020. Epub 2013 Sep 24.

Characterisation of a catalase-negative methicillin-resistant Staphylococcus aureus isolate from a dog.

Author information

1
Department of Veterinary Medicine, University of Bari "Aldo Moro", Strada provinciale per Casamassima km. 3, 70010 Valenzano, Bari, Italy. Electronic address: marialaura.corrente@uniba.it.

Abstract

A catalase-negative MRSA strain and a methicillin resistant Staphylococcus pseudintermedius strain (MRSP) were isolated from a dog affected by a severe form of pododermatitis. The catalase negative isolate was typed as SCCmec I, PVL negative, ST5 t002 strain. A deletion at position 487 of the kat gene altered the functionality of the catalase enzyme. This is the first report of a catalase-negative MRSA in animals. As catalase test is a rapid assay routinely employed for the identification of staphylococci in clinical microbiology laboratories, the presence of MRSA with this uncommon phenotype may be underestimated. Moreover, catalase-negative staphylococci should be investigated more in-depth in order to assess their virulence.

KEYWORDS:

Catalase; Dog; MRSA

PMID:
24139722
DOI:
10.1016/j.vetmic.2013.09.020
[Indexed for MEDLINE]
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