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Distribution of capsular types and production of muramidase-released protein (MRP) and extracellular factor (EF) of Streptococcus suis strains isolated from diseased pigs in seven European countries.
- Source :
-
Veterinary microbiology [Vet Microbiol] 2000 Jun 01; Vol. 74 (3), pp. 237-48. - Publication Year :
- 2000
-
Abstract
- Streptococcus suis strains (n=411), isolated from diseased pigs in seven European countries were serotyped using specific antisera against serotype 1 to 28, and were phenotyped on the basis of their muramidase-released-protein (MRP) and extracellular-factor protein (EF) production. Overall, S. suis serotype 2 appeared to be most prevalent (32%), followed by serotype 9 (20%) and serotype 1 (12%). Serotype 2 was most frequently isolated in France, Italy and Spain, whereas serotype 9 was most frequently isolated in Belgium, The Netherlands and Germany. In the United Kingdom serotypes 1 and 14 were most frequently isolated. High percentages of S. suis serotype 1, 2, 1/2 and 14 strains, isolated from tissues associated with S. suis infections such as brain, serosa, joint, heart and organs expressed the EF-protein, indicating that in these serotypes expression of EF is likely to be associated with virulence. In contrast, strains belonging to serotype 7 and 9, isolated from tissues associated with S. suis infections did not produce EF. These results strongly suggest that in the serotypes 7 and 9 EF expression is not related to virulence. More than 80% of the S. suis serotype 9 strains produced an MRP* protein, a high molecular variant of the 136kDa MRP. Expression of MRP* in serotype 9 strains is possibly associated with virulence.
- Subjects :
- Age Factors
Agglutination Tests veterinary
Animals
Antibodies, Monoclonal
Bacterial Capsules chemistry
Bacterial Capsules classification
Bacterial Proteins metabolism
Blotting, Western veterinary
Brain microbiology
Colony Count, Microbial
Electrophoresis, Polyacrylamide Gel veterinary
Europe
Heart microbiology
Lung microbiology
Serotyping veterinary
Serous Membrane microbiology
Streptococcal Infections microbiology
Streptococcus suis chemistry
Streptococcus suis classification
Swine
Virulence
Bacterial Proteins biosynthesis
Streptococcal Infections veterinary
Streptococcus suis pathogenicity
Swine Diseases microbiology
Subjects
Details
- Language :
- English
- ISSN :
- 0378-1135
- Volume :
- 74
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Veterinary microbiology
- Publication Type :
- Academic Journal
- Accession number :
- 10808092
- Full Text :
- https://doi.org/10.1016/s0378-1135(00)00188-7