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Characterisation of Eubacterium-like strains isolated from oral infections.

Abstract
The genus Eubacterium currently includes a heterogeneous group of gram-positive, non-spore-forming anaerobic bacilli, many of which are slow growing, fastidious and generally unreactive in biochemical tests. As a consequence, cultivation and identification of isolates are difficult and the taxonomy of the group remains indifferent. In this study, 105 isolates from odontogenic infections, infections associated with dental implants or saliva from healthy subjects and provisionally assigned to the genus Eubacterium were subjected to phenotypic and genotypic analysis. Ninety-one of the isolates were identified as belonging to one of 14 previously described species: Atopobium parvulum (5 isolates), A. rimae (29), Bulleidia extructa (2), Cryptobacterium curtum (1), Dialister pneumosintes (1), Eubacterium saburreum (2), E. sulci (8), E. yurii subsp. yurii (1), Filifactor alocis (3), Lactobacillus uli (1), Mogibacterium timidum (13), M. vescum (6), Pseudoramibacter alactolyticus (6) and Slackia exigua (13). The remaining 14 isolates did not correspond to existing species. This study confirms the diversity of organisms provisionally assigned to the genus Eubacterium by conventional identification methods. This group of organisms is frequently isolated from oral infections but their role in the aetiology of these conditions has yet to be determined.
AuthorsJulia Downes, Mark A Munson, David A Spratt, Eija Kononen, Eveliina Tarkka, Hannele Jousimies-Somer, William G Wade
JournalJournal of medical microbiology (J Med Microbiol) Vol. 50 Issue 11 Pg. 947-951 (Nov 2001) ISSN: 0022-2615 [Print] England
PMID11699590 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • DNA, Bacterial
  • Dental Implants
  • RNA, Ribosomal, 16S
Topics
  • Actinomycetales Infections (microbiology)
  • Bacterial Typing Techniques
  • DNA, Bacterial (analysis, genetics)
  • Dental Implants (microbiology)
  • Eubacterium (classification, genetics, isolation & purification)
  • Genes, rRNA
  • Genotype
  • Humans
  • Mouth Diseases (microbiology)
  • Phenotype
  • RNA, Ribosomal, 16S (genetics)
  • Saliva (microbiology)
  • Sequence Analysis, DNA

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