title: Bacteriologic and clinical study of Bacteroides oris and Bacteroides buccae.
abstract: We characterized clinical isolates previously identified in our laboratory as Bacteroides ruminicola, the human strains of which are now classified as Bacteroides oris and Bacteroides buccae. A total of 72 isolates (55 B. buccae isolates and 17 B. oris isolates) recovered over a 10-year period were studied. They were differentiated from each other by special-potency antibiotic disks and the RapID-ANA system. The two organisms were associated with a variety of infections, the majority being pleuropulmonary (29.2%) and infections of the head and neck region (27.8%). The infections were always polymicrobial, usually with more than five organisms per specimen. A total of 44% of the B. oris strains and 27% of the B. buccae strains were resistant to penicillin G (breakpoint, 2 U/ml), and this correlated with the presence of beta-lactamase. Although B. oris and B. buccae are found with some frequency in human infections, they are present primarily as components of a mixed flora.
mesh_terms: D000118:Acetylglucosaminidase / Q000378:metabolism; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001439:Bacteroides / Q000145:classification* / Q000302:isolation & purification / Q000502:physiology; D001442:Bacteroides Infections / Q000382:microbiology*; D006801:Humans; D008826:Microbial Sensitivity Tests; D010429:Pentoses / Q000378:metabolism; D005644:alpha-L-Fucosidase / Q000378:metabolism
chemical_list: D000900:Anti-Bacterial Agents; D010429:Pentoses; D005644:alpha-L-Fucosidase; D000118:Acetylglucosaminidase