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  • Title: Differentiation of oral Actinomyces species by 16S ribosomal DNA polymerase chain reaction-restriction fragment length polymorphism.
    Author: Sato T, Matsuyama J, Takahashi N, Sato M, Johnson J, Schachtele C, Hoshino E.
    Journal: Arch Oral Biol; 1998 Mar; 43(3):247-52. PubMed ID: 9631177.
    Abstract:
    16S rDNA polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was used to generate restriction profiles of the reference strains, including the American Type Culture Collection type strains, of oral Actinomyces spp., i.e., A. israelii, A. gerencseriae, A. naeslundii genospecies 1 and 2, A. odontolyticus, A. meyeri and A. georgiae, and 23 Actinomyces strains isolated from human dental plaque. The 16S rRNA gene sequences from isolated genomic DNA samples were amplified by PCR. The PCR products were purified and characterized by single digestion with four restriction endonucleases, i.e., MnlI, HaeIII, CfoI, or HpaII. Among them, MnlI was found to discriminate the respective reference strains. The clinical isolates were assigned to one of the species, i.e., A. gerencseriae, A. naeslundii genospecies 1 and 2 and A. odontolyticus, on the basis of their restriction profiles by single digestion with MnlI. Thus, 16S rDNA PCR-RFLP, using MnlI, is a rapid and reliable method for the differentiation of oral Actinomyces spp.
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