title: [Streptococcal immunoglobulin Fc receptors as inductors of anti-immunoglobulins].
abstract: The activity of IgG Fc-receptor was studied in 71 strains of serological group A streptococci isolated from streptococcal infection patients and carriers. The group of practically healthy subjects and those with diseases of non-streptococcal origin were found to have almost identical streptococcal strain distribution for IgG FcR+ and IgG FcR- (42.4 and 57.6 per cent, respectively). In the strains isolated from streptococcal infection patients, IgG FcR+ strains made up 63.1 per cent. In rabbit immunization, the capacity of IgG FcR-positive strains that were isolated from patients to induce anti-immunoglobulin synthesis was revealed. The induced synthesis of anti-immunoglobulins was noted also in rabbit immunization with purified streptococcal IgG Fc-receptors of M15 streptococcus and rabbit IgG eluated with streptococcal Fc receptors. Possible mechanisms of anti-immunoglobulin synthesis in experimental immunization are discussed.
authors.forename: I V
authors.initials: IV
authors.lastname: Koroleva
authors.forename: L A
authors.initials: LA
authors.lastname: Burova
authors.forename: K
authors.initials: K
authors.lastname: Shalen
mesh_terms: D000818:Animals; D000888:Antibodies, Anti-Idiotypic / Q000096:biosynthesis*; D000907:Antibodies, Bacterial / Q000276:immunology*; D006801:Humans; D007114:Immunization; D007074:Immunoglobulin G / Q000276:immunology*; D011817:Rabbits; D011961:Receptors, Fc / Q000276:immunology*; D013297:Streptococcus pyogenes / Q000276:immunology*
chemical_list: D000888:Antibodies, Anti-Idiotypic; D000907:Antibodies, Bacterial; D007074:Immunoglobulin G; D011961:Receptors, Fc
vernacular_title: Immunoglobulinovye Fc-retseptory streptokokkov kak induktory antiimmunoglobulinov.