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FEMS Microbiology Letters

The transcription of the neuD gene is stronger in serotype III group B streptococci strains isolated from cerebrospinal fluid than in strains isolated from vagina

Authors

  • Hélène Pailhories,

    1. Equipe “Bactéries et risque materno-foetal”, UMR1282 Infectiologie et Santé Publique, UFR Médecine – Université François Rabelais de Tours, Tours, France
    2. Equipe ”Bactéries et risque materno-foetal“, INRA, Nouzilly, France
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  • Roland Quentin,

    1. Equipe “Bactéries et risque materno-foetal”, UMR1282 Infectiologie et Santé Publique, UFR Médecine – Université François Rabelais de Tours, Tours, France
    2. Equipe ”Bactéries et risque materno-foetal“, INRA, Nouzilly, France
    3. Service de Bactériologie et Hygiène Hospitalière, Centre Hospitalier Universitaire de Tours, Tours, France
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  • Marie-Frédérique Lartigue

    Corresponding author
    1. Equipe “Bactéries et risque materno-foetal”, UMR1282 Infectiologie et Santé Publique, UFR Médecine – Université François Rabelais de Tours, Tours, France
    2. Equipe ”Bactéries et risque materno-foetal“, INRA, Nouzilly, France
    3. Service de Bactériologie et Hygiène Hospitalière, Centre Hospitalier Universitaire de Tours, Tours, France
    • Correspondence: Marie-Frédérique Lartigue, Equipe “Bactéries et risque materno-foetal”, UMR1282 Infectiologie et Santé Publique, UFR Médecine – Université François Rabelais de Tours and INRA Nouzilly, Bd Tonnellé

      F-37032 Tours, France. Tel.: +33 2 47 47 81 16;

      fax: +33 2 47 36 61 97; e-mail: lartigue@med.univ-tours.fr

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Abstract

Group B streptococci (GBS) are a major cause of neonatal meningitis, and sialic acid is a determinant of the development of meningitis. The transcription level of the neuD gene, used as a marker of neu gene expression and capsular production, was significantly higher in serotype III GBS strains isolated from meningitis than from vaginal carriage. This was irrespective both of the phylogenetic position of strains and of the presence of a thymine at position 264 in the neuD gene. Differences in neuD gene transcription may explain in part why particular isolates among the GBS strains colonizing the vagina can cause meningitis.

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