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Genetic and virulence-phenotype characterization of serotypes 2 and 9 of Streptococcus suis swine isolates

International Microbiology publica este artículo de investigación

1 de septiembre de 2009

The aim of this study was to analyze the genetic characteristics and virulence phenotypes of Streptococcus suis, specifically, in clinical isolates of serotypes 2 and 9 (n = 195), obtained from diverse geographical areas across Spain. Pulsed-field gel electrophoresis (PFGE) typing identified 97 genetic profiles, 68% of which were represented by single isolates, indicative of a substantial genetic diversity among the S. suis isolates analyzed. Five PFGE profiles accounted for 33.3% of the isolates and were isolated from 38% of the herds in nine different provinces, indicative of the bacterium`s widespread distribution in the Spanish swine population. Representative isolates of the most prevalent PFGE profiles of both serotypes were subjected to multilocus sequence typing (MLST) analysis. The results indicated that serotypes 2 and 9 have distinct genetic backgrounds. Serotype 2 isolates belong to the ST1 complex, a highly successful clone that has spread over most European countries. In accordance with isolates of this complex, most serotype 2 isolates also expressed the phenotype MRP(+)EF(+)SLY(+). Serotype 9 isolates belong to the ST61 complex, which is distantly related to the widespread European ST87 clone. Also, in contrast to most isolates of the European ST87 clone, which express the large variant MRP*, the majority of serotype 9 isolates (97.9%) did not express the protein




Blume V., Luque I., Vela AI., Borge C., Maldonado A., Dominguez L., Tarradas C. y Fernandez-Garayzabal JF..




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Genetic and virulence-phenotype characterization of serotypes 2 and 9 of Streptococcus suis swine isolates

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Genetic and virulence-phenotype characterization of serotypes 2 and 9 of Streptococcus suis swine isolates



Participantes:

Universidad ComplutenseServicio de Identificación y Caracterización Microbiana (ICM). Centro de Vigilancia Sanitaria Veterinaria (VISAVET). Universidad Complutense (UCM).

Universidad ComplutenseDepartamento de Sanidad Animal. Facultad de Veterinaria. Universidad Complutense (UCM).

Universidad de CórdobaDepartamento de Sanidad Animal. Facultad de Veterinaria. Universidad de Córdoba (UCO).







International Microbiology
FACTOR YEAR Q
1.800 2009

NLMID: 9816585

PMID: 19784922

ISSN: 1139-6709



TÍTULO: Genetic and virulence-phenotype characterization of serotypes 2 and 9 of Streptococcus suis swine isolates


REVISTA: Int Microbiol


NUMERACIÓN: 12(3):161-6


AÑO: 2009


EDITORIAL: Viguera Editores


AUTORES: Blume V., Luque I., Vela AI., Borge C., Maldonado A., Dominguez L., Tarradas C. and Fernandez-Garayzabal JF..


3rd
Ana Isabel Vela Alonso
6th
Lucas Domínguez Rodríguez
Last
José Francisco Fernández-Garayzabal Fernández

DOI: https://doi.org/10.2436/20.1501.01.94


CITA ESTA PUBLICACIÓN:

Blume V., Luque I., Vela AI., Borge C., Maldonado A., Dominguez L., Tarradas C. y Fernandez-Garayzabal JF. Genetic and virulence-phenotype characterization of serotypes 2 and 9 of Streptococcus suis swine isolates. International Microbiology . 12(3):161-6. 2009. (A). ISSN: 1139-6709. DOI: 10.2436/20.1501.01.94


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