title: News & notes: adhesiveness of Bacteroides fragilis strains isolated from feces of healthy donors, abscesses, and blood.
abstract: Bacteroides fragilis strains attached to oral epithelial cells (ECs) and the cell line Intestine 407 and associated with human phagocytes with different efficiencies depending on their source. The 58%, 75%, and 40% of strains isolated from feces, abscesses, and blood respectively adhered to ECs with good efficiency (11-40 bacteria/cell). Of the strains from feces and abscesses, 17% and 20% exhibited a high adherence (>40 bacteria/cell); however, none of the blood isolates presented this property. Similar results were obtained with the cell line Intestine 407 and human phagocytes. Of the isolates from feces, abscesses, and blood, 20%, 56%, and 71% respectively also exhibited hemagglutination ability, indicating that this property is a virulence trait more frequently present among pathogenic isolates than in commensal strains.
authors.affiliation: Division of Microbiology, GBF-National Research Centre for Biotechnology, Mascheroder Weg 1, D-38124 Braunschweig, Germany.
authors.forename: C A
authors.initials: CA
authors.lastname: Guzmàn
authors.forename: F
authors.initials: F
authors.lastname: Biavasco
authors.forename: C
authors.initials: C
authors.lastname: Pruzzo
mesh_terms: D000038:Abscess / Q000382:microbiology*; D001422:Bacterial Adhesion; D001442:Bacteroides Infections / Q000209:etiology / Q000382:microbiology*; D001441:Bacteroides fragilis / Q000302:isolation & purification* / Q000378:metabolism* / Q000472:pathogenicity; D001769:Blood / Q000382:microbiology; D002460:Cell Line; D005243:Feces / Q000382:microbiology; D006384:Hemagglutination; D006801:Humans; D066298:In Vitro Techniques; D014774:Virulence