Did you mean: actinomyces meyeri
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The American Journal of Medicine Jul 1987
Topics: Abscess; Actinomycetales Infections; Adult; Breast Diseases; Chronic Disease; Female; Humans
PubMed: 3605173
DOI: 10.1016/0002-9343(87)90523-7 -
The Mount Sinai Journal of Medicine,... Mar 1988
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Journal of General Microbiology Nov 1975A numerical taxonomic study was made on 49 facultative anaerobic Gram-positive filamentous and/or diphtheroidal organisms isolated from dental plaques, carious dentin...
A numerical taxonomic study was made on 49 facultative anaerobic Gram-positive filamentous and/or diphtheroidal organisms isolated from dental plaques, carious dentin and faeces, together with 63 reference strains belonging to the genera Actinomyces, Arachnia, Bifidobacterium, Actinobacterium, Propionibacterium, Eubacterium and Lactobacillus. They were examined for 90 unit characters covering a wide range of tests and properties. The data were subjected to computer analysis in which the simple matching coefficient (SSM) and the similarity index (SJ) were calculated, and the results of single linkage techniques and an unweighted average linkage cluster analysis technique were compared. The strains fell into six major groups (phena). The Actinomyces strains were recovered in two phena; the first contained Actinomyces israelii and the other facultative anaerobic Actinomyces, including subclusters equal to taxospecies of A. odontolyticus and A. viscosus/A. naeslundii, while the other phenon corresponded to the genera Arachnia, Actinobacterium, Bifidobacterium and Propionibacterium. The groups of Arachnia and Actinobacterium each contained one species, representing taxospecies of Arachnia propionica and Actinobacterium meyerii. Taxonomic criteria, both constant and discriminative, were selected to form a diagnostic table useful for laboratory identification of this group of organisms. Immunofluorescence supported the numerical data.
Topics: Actinomyces; Actinomycetaceae; Classification; Computers; Dental Caries; Dental Plaque; Eubacterium; Feces; Humans; Lactobacillus; Propionibacterium
PubMed: 1202157
DOI: 10.1099/00221287-91-1-17 -
Zentralblatt Fur Bakteriologie :... Nov 1994Species delineation in the genus Actinomyces remains unclear, particularly regarding the two taxa, A. naeslundii and A. viscosus. The ribotyping patterns of 64 strains...
Species delineation in the genus Actinomyces remains unclear, particularly regarding the two taxa, A. naeslundii and A. viscosus. The ribotyping patterns of 64 strains of Actinomyces, representing 8 species and comprising different serotypes, were studied as possible taxonomic tools, using an acetyl-aminofluorene (AAF)-labelled E. coli 16S + 23S rRNA probe. Similarities between patterns were assessed using Jaccard's coefficient and clustering achieved using the unweighted pair-group method with average linkage (UPGMA) on a Macintosh II (Apple, Cupertino, USA) computer. The dendrogram obtained from the ribotypes gave results which were in reasonable agreement with many previous reports: A. bovis, A. gerensceriae, A. israelii, A. meyerii, A. odontolyticus and A. pyogenes were found to be distinct species but the two taxa A. naeslundii and A. viscosus remained unclear. Further investigations, using a larger number of A. naeslundii and A. viscosus strains and other endonucleases, need to be carried out to provide more information concerning the relatedness of these two taxa. Nevertheless, these preliminary results suggested that the Actinomyces chromosome contains multiple rRNA operons which may be used as an epidemiological and taxonomical tool.
Topics: Actinomyces; Animals; Bacterial Typing Techniques; Humans; RNA, Bacterial; RNA, Ribosomal; Restriction Mapping
PubMed: 7537133
DOI: 10.1016/s0934-8840(11)80329-4