title: Polyagglutinability due to loss of O-antigenic determinants in Pseudomonas aeruginosa strains isolated from cystic fibrosis patients.
abstract: O-polyagglutinable P. aeruginosa are prevalent among chronically infected cystic fibrosis patients. In the present work, one O-group 3, one O-group 9 and one polyagglutinable 0-3/9 strain were analysed by use of both corresponding group specific antisera against the O-antigen and polyspecific antisera against all extractable antigens of the 3 strains. Quantitative immunoelectrophoresis and classical tube-agglutination methods were employed in the analysis. The results showed that the polyagglutinable strain contained 0.1% and the 0-9 strain 1%, respectively, of the O-antigen-containing LPS present in the 0-3 strain. It is discussed whether these differences represent a gradual antigenic adjustment to the defence mechanisms of the chronically infected patients.
authors.forename: B
authors.initials: B
authors.lastname: Ojeniyi
authors.forename: L
authors.initials: L
authors.lastname: Baek
authors.forename: N
authors.initials: N
authors.lastname: Høiby
mesh_terms: D000371:Agglutination; D000942:Antigens, Bacterial / Q000032:analysis; D003550:Cystic Fibrosis / Q000382:microbiology*; D000939:Epitopes; D006801:Humans; D007123:Immunoelectrophoresis, Two-Dimensional; D011550:Pseudomonas aeruginosa / Q000276:immunology*
chemical_list: D000942:Antigens, Bacterial; D000939:Epitopes