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A Bouvet - One of the best experts on this subject based on the ideXlab platform.

  • reappraisal of the taxonomy of the Streptococcus bovis Streptococcus equinus complex and related species description of Streptococcus gallolyticus subsp gallolyticus subsp nov s gallolyticus subsp macedonicus subsp nov and s gallolyticus subsp pasteu
    International Journal of Systematic and Evolutionary Microbiology, 2003
    Co-Authors: Laurent Schlegel, Francine Grimont, Elisabeth Ageron, Patrick A D Grimont, A Bouvet
    Abstract:

    ‘Streptococcus bovis/Streptococcus equinus’ is a large bacterial complex including different species frequently isolated from infections of humans (Streptococcus gallolyticus, Streptococcus infantarius) or animals (S. bovis, S. equinus, Streptococcus alactolyticus). The separation of S. bovis into three different biotypes has been partially correlated with genetic differentiation. In addition, recent advances in bacterial phylogeny have led to the inclusion of Streptococcus macedonicus and Streptococcus waius in this complex. The aim of this study was to improve physiological differentiation between species related to the complex and to clarify their respective phylogenetic positions. In this study, physiological, genetic and phylogenetic analyses of a set of 88 streptococcal strains were performed. The diversity of strains of S. bovis biotype II was analysed, and it was confirmed that they belong to different species, either S. equinus or S. infantarius. It was demonstrated that S. gallolyticus, S. bovis biotype II.2, S. macedonicus and S. waius form a single DNA cluster separated into three different subspecies. They are delineated by different biochemical traits, limited DNA–DNA relatedness and noticeable divergence in 16S rDNA sequences. According to the current definition of species, the names S. gallolyticus subsp. gallolyticus subsp. nov., S. gallolyticus subsp. pasteurianus subsp. nov. and S. gallolyticus subsp. macedonicus subsp. nov. are proposed for these three subspecies.

  • Streptococcus infantarius sp nov related to Streptococcus bovis and Streptococcus equinus
    Advances in Experimental Medicine and Biology, 1997
    Co-Authors: A Bouvet, Francine Grimont, David M Collins, Farida Benaoudia, Catherine Devine, Beatrice Regnault, Patrick A D Grimont
    Abstract:

    Streptococcus bovis and S. equinus are intestinal bacteria, formerly called non-enterococcal group D streptococci, that are frequently isolated from human and animal specimens. These two species were first delineated according to epidemiological and biochemical characteristics, and then two different biotypes of S. bovis were described. The distinction between biotypes I and II, depending on their ability to ferment mannitol, was confirmed by genetic studies.1, 6 On the basis of DNA-DNA hybridizations, Farrow et al. described six groups of DNA homology among strains of S. bovis, S. equinus, and related taxa.2 Group 1 includes the type strains of both S. bovis and S. equinus, which represent a single genospecies (>70% DNA homology). Group 2 includes typical human strains of S. bovis biotype I and strains isolated from bovine mastitis; this group is now recognized as an individual species, named S. gallolyticus.7 Strains of Group 3 are commonly isolated from animal specimens and have no homology with S. suis. Group 4 includes phenotypically heterogeneous strains, mostly from human origin. Groups 5 and 6 have been identified as two new species, at present called Enterococcus saccharolyticus and Streptococcus alactolyticus, respectively.2

Patrick A D Grimont - One of the best experts on this subject based on the ideXlab platform.

  • reappraisal of the taxonomy of the Streptococcus bovis Streptococcus equinus complex and related species description of Streptococcus gallolyticus subsp gallolyticus subsp nov s gallolyticus subsp macedonicus subsp nov and s gallolyticus subsp pasteu
    International Journal of Systematic and Evolutionary Microbiology, 2003
    Co-Authors: Laurent Schlegel, Francine Grimont, Elisabeth Ageron, Patrick A D Grimont, A Bouvet
    Abstract:

    ‘Streptococcus bovis/Streptococcus equinus’ is a large bacterial complex including different species frequently isolated from infections of humans (Streptococcus gallolyticus, Streptococcus infantarius) or animals (S. bovis, S. equinus, Streptococcus alactolyticus). The separation of S. bovis into three different biotypes has been partially correlated with genetic differentiation. In addition, recent advances in bacterial phylogeny have led to the inclusion of Streptococcus macedonicus and Streptococcus waius in this complex. The aim of this study was to improve physiological differentiation between species related to the complex and to clarify their respective phylogenetic positions. In this study, physiological, genetic and phylogenetic analyses of a set of 88 streptococcal strains were performed. The diversity of strains of S. bovis biotype II was analysed, and it was confirmed that they belong to different species, either S. equinus or S. infantarius. It was demonstrated that S. gallolyticus, S. bovis biotype II.2, S. macedonicus and S. waius form a single DNA cluster separated into three different subspecies. They are delineated by different biochemical traits, limited DNA–DNA relatedness and noticeable divergence in 16S rDNA sequences. According to the current definition of species, the names S. gallolyticus subsp. gallolyticus subsp. nov., S. gallolyticus subsp. pasteurianus subsp. nov. and S. gallolyticus subsp. macedonicus subsp. nov. are proposed for these three subspecies.

  • Streptococcus infantarius sp nov related to Streptococcus bovis and Streptococcus equinus
    Advances in Experimental Medicine and Biology, 1997
    Co-Authors: A Bouvet, Francine Grimont, David M Collins, Farida Benaoudia, Catherine Devine, Beatrice Regnault, Patrick A D Grimont
    Abstract:

    Streptococcus bovis and S. equinus are intestinal bacteria, formerly called non-enterococcal group D streptococci, that are frequently isolated from human and animal specimens. These two species were first delineated according to epidemiological and biochemical characteristics, and then two different biotypes of S. bovis were described. The distinction between biotypes I and II, depending on their ability to ferment mannitol, was confirmed by genetic studies.1, 6 On the basis of DNA-DNA hybridizations, Farrow et al. described six groups of DNA homology among strains of S. bovis, S. equinus, and related taxa.2 Group 1 includes the type strains of both S. bovis and S. equinus, which represent a single genospecies (>70% DNA homology). Group 2 includes typical human strains of S. bovis biotype I and strains isolated from bovine mastitis; this group is now recognized as an individual species, named S. gallolyticus.7 Strains of Group 3 are commonly isolated from animal specimens and have no homology with S. suis. Group 4 includes phenotypically heterogeneous strains, mostly from human origin. Groups 5 and 6 have been identified as two new species, at present called Enterococcus saccharolyticus and Streptococcus alactolyticus, respectively.2

L. H. Danziger - One of the best experts on this subject based on the ideXlab platform.

  • Streptococcus milleri group: Renewed interest in an elusive pathogen
    European Journal of Clinical Microbiology and Infectious Diseases, 1992
    Co-Authors: S. C. Piscitelli, J. Shwed, P. Schreckenberger, L. H. Danziger
    Abstract:

    The following review examines the bacteriological characteristics, epidemiology, pathogenicity and antimicrobial susceptibility of the “ Streptococcus milleri group”. “ Streptococcus milleri group” is a term for a large group of streptococci which includes Streptococcus intermedius, Streptococcus constellatus and Streptococcus anginosus . Usually considered commensals, these organisms are often associated with various pyogenic infections including cardiac, abdominal, skin and central nervous system infections. Organisms of the “ Streptococcus milleri group” are often unrecognized pathogens due to the lack of uniformity in classifications and difficulties in microbiological identification. Penicillin G, cephalosporins, clindamycin and vancomycin all possess activity against these streptococci. Use of agents with poor activity may promote infections with “ Streptococcus milleri group” and allow it to exhibit its pathogenicity. An understanding of these organisms may aid in their recognition and proper treatment.

Laurent Schlegel - One of the best experts on this subject based on the ideXlab platform.

  • reappraisal of the taxonomy of the Streptococcus bovis Streptococcus equinus complex and related species description of Streptococcus gallolyticus subsp gallolyticus subsp nov s gallolyticus subsp macedonicus subsp nov and s gallolyticus subsp pasteu
    International Journal of Systematic and Evolutionary Microbiology, 2003
    Co-Authors: Laurent Schlegel, Francine Grimont, Elisabeth Ageron, Patrick A D Grimont, A Bouvet
    Abstract:

    ‘Streptococcus bovis/Streptococcus equinus’ is a large bacterial complex including different species frequently isolated from infections of humans (Streptococcus gallolyticus, Streptococcus infantarius) or animals (S. bovis, S. equinus, Streptococcus alactolyticus). The separation of S. bovis into three different biotypes has been partially correlated with genetic differentiation. In addition, recent advances in bacterial phylogeny have led to the inclusion of Streptococcus macedonicus and Streptococcus waius in this complex. The aim of this study was to improve physiological differentiation between species related to the complex and to clarify their respective phylogenetic positions. In this study, physiological, genetic and phylogenetic analyses of a set of 88 streptococcal strains were performed. The diversity of strains of S. bovis biotype II was analysed, and it was confirmed that they belong to different species, either S. equinus or S. infantarius. It was demonstrated that S. gallolyticus, S. bovis biotype II.2, S. macedonicus and S. waius form a single DNA cluster separated into three different subspecies. They are delineated by different biochemical traits, limited DNA–DNA relatedness and noticeable divergence in 16S rDNA sequences. According to the current definition of species, the names S. gallolyticus subsp. gallolyticus subsp. nov., S. gallolyticus subsp. pasteurianus subsp. nov. and S. gallolyticus subsp. macedonicus subsp. nov. are proposed for these three subspecies.

Francine Grimont - One of the best experts on this subject based on the ideXlab platform.

  • reappraisal of the taxonomy of the Streptococcus bovis Streptococcus equinus complex and related species description of Streptococcus gallolyticus subsp gallolyticus subsp nov s gallolyticus subsp macedonicus subsp nov and s gallolyticus subsp pasteu
    International Journal of Systematic and Evolutionary Microbiology, 2003
    Co-Authors: Laurent Schlegel, Francine Grimont, Elisabeth Ageron, Patrick A D Grimont, A Bouvet
    Abstract:

    ‘Streptococcus bovis/Streptococcus equinus’ is a large bacterial complex including different species frequently isolated from infections of humans (Streptococcus gallolyticus, Streptococcus infantarius) or animals (S. bovis, S. equinus, Streptococcus alactolyticus). The separation of S. bovis into three different biotypes has been partially correlated with genetic differentiation. In addition, recent advances in bacterial phylogeny have led to the inclusion of Streptococcus macedonicus and Streptococcus waius in this complex. The aim of this study was to improve physiological differentiation between species related to the complex and to clarify their respective phylogenetic positions. In this study, physiological, genetic and phylogenetic analyses of a set of 88 streptococcal strains were performed. The diversity of strains of S. bovis biotype II was analysed, and it was confirmed that they belong to different species, either S. equinus or S. infantarius. It was demonstrated that S. gallolyticus, S. bovis biotype II.2, S. macedonicus and S. waius form a single DNA cluster separated into three different subspecies. They are delineated by different biochemical traits, limited DNA–DNA relatedness and noticeable divergence in 16S rDNA sequences. According to the current definition of species, the names S. gallolyticus subsp. gallolyticus subsp. nov., S. gallolyticus subsp. pasteurianus subsp. nov. and S. gallolyticus subsp. macedonicus subsp. nov. are proposed for these three subspecies.

  • Streptococcus infantarius sp nov related to Streptococcus bovis and Streptococcus equinus
    Advances in Experimental Medicine and Biology, 1997
    Co-Authors: A Bouvet, Francine Grimont, David M Collins, Farida Benaoudia, Catherine Devine, Beatrice Regnault, Patrick A D Grimont
    Abstract:

    Streptococcus bovis and S. equinus are intestinal bacteria, formerly called non-enterococcal group D streptococci, that are frequently isolated from human and animal specimens. These two species were first delineated according to epidemiological and biochemical characteristics, and then two different biotypes of S. bovis were described. The distinction between biotypes I and II, depending on their ability to ferment mannitol, was confirmed by genetic studies.1, 6 On the basis of DNA-DNA hybridizations, Farrow et al. described six groups of DNA homology among strains of S. bovis, S. equinus, and related taxa.2 Group 1 includes the type strains of both S. bovis and S. equinus, which represent a single genospecies (>70% DNA homology). Group 2 includes typical human strains of S. bovis biotype I and strains isolated from bovine mastitis; this group is now recognized as an individual species, named S. gallolyticus.7 Strains of Group 3 are commonly isolated from animal specimens and have no homology with S. suis. Group 4 includes phenotypically heterogeneous strains, mostly from human origin. Groups 5 and 6 have been identified as two new species, at present called Enterococcus saccharolyticus and Streptococcus alactolyticus, respectively.2

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