PFGE diversity within the methicillin-resistant Staphylococcus aureus clonal lineage ST398.
BMC Microbiol
; 10: 40, 2010 Feb 09.
Article
em En
| MEDLINE
| ID: mdl-20144202
ABSTRACT
BACKGROUND:
Livestock has recently been identified as a new reservoir of methicillin-resistant Staphylococcus aureus (MRSA). Most isolates belong to ST398 and are non-typeable with PFGE using SmaI, making it difficult to study transmission and outbreaks. Therefore, a new PFGE using Cfr9I, a neoschizomer of SmaI was optimized and evaluated to investigate ST398 isolates.RESULTS:
After optimizing and evaluating the Cfr9I PFGE, clear and reproducible banding patterns were obtained from all previously non-typeable MRSA (NT(SmaI) -MRSA) isolates. The PFGE patterns of ST398 isolates showed more diversity than with spa-typing and/or MLST. The PFGE results showed diversity within and between the two most prevalent spa-types of NT(SmaI) -MRSA (t011 and t108). No match was found, when comparing banding patterns of the NT(SmaI) -MRSA with 700 different PFGE types, obtained with SmaI digestion, in our database of more than 4000 strains. Furthermore, possible transmission among veterinarians and their family members was investigated and an outbreak of ST398 MRSA in a residential care facility was confirmed with the Cfr9I PFGE.CONCLUSIONS:
The adjusted PFGE can be used as a method for selecting important and distinct ST398 isolates for further research. The adjustments in the PFGE protocol using Cfr9I are easy to implement to study the ST398 clonal lineage in laboratories which already have a PFGE facility.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Infecções Estafilocócicas
/
Eletroforese em Gel de Campo Pulsado
/
Staphylococcus aureus Resistente à Meticilina
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
BMC Microbiol
Assunto da revista:
MICROBIOLOGIA
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Holanda