Update on the Taxonomy and the Clinical and Laboratory Characteristics of Pigmented Anaerobic Gram-Negative Rods
Identifieur interne : 00A589 ( Main/Exploration ); précédent : 00A588; suivant : 00A590Update on the Taxonomy and the Clinical and Laboratory Characteristics of Pigmented Anaerobic Gram-Negative Rods
Auteurs : Hannele R. Jousimies-Somer [États-Unis]Source :
- Clinical Infectious Diseases [ 1058-4838 ] ; 1995-06.
Abstract
Pigmented anaerobic gram-negative rods are currently categorized as 17 species distributed in three genera: Prevotella, Porphyromonas, and Bacteroides. These organisms are often encountered in clinical specimens but are also found as part of the indigenous flora on various mucosal surfaces. Several studies are presently assessing the association of individual species with health and disease. For example, Porphyromonas gingivalis and Porphyromonas endodontalis are key putative pathogens in adult periodontitis and root canal infections, respectively. Porphyromonas asaccharolytica is prevalent in extraoral infections. The Porphyromonas species of animal origin have been isolated from infected bite wounds in humans. Isolates closely resembling Bacteroides levii have been recovered from various types of human infections. According to preliminary reports, Prevotella intermedia tends to be associated more often with periodontal disease than with a healthy oral cavity. In the laboratory, enzyme profiling facilitates the identification of these pigmented rods. β-Lactamase production is more common among Prevotella species (30%–50%) than among Porphyromonas species (<10%).
Url:
DOI: 10.1093/clinids/20.Supplement_2.S187
Affiliations:
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