title: [Chemical and immunogenic properties of the capsular antigen of Staphylococcus aureus. III. Protective activity of capsular antigen in experiments on mice].
abstract: Experiments were conducted on 1500 albino mice; protective activity of 7 batches of S. aureus capsular antigen isolated from 5 strains was studied. The animals were immunized subcutaneously with different doses of the preparation (from 0.001 to 10000 microgram) once, twice, and thrice, and infected intraperitoneally with 6 encapsulated cultures. Capsular antigen proved to possess weak protective properties. The following regularities were revealed: 1) high antigen doses (over 5 microgram) increased mouse sensitivity to staphylococcus infection; 2) the greatest protective activity was shown by doses within 0.01-1 microgram; 3) there was no distinct "dose-effect" dependence; 4) single immunization was less effective than double and triple; 5) antigenic specificity of the capsular material was not connected with its protective properties.
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial / Q000008:administration & dosage / Q000276:immunology*; D003429:Cross Reactions; D004306:Dose-Response Relationship, Immunologic; D051379:Mice; D013045:Species Specificity; D013203:Staphylococcal Infections / Q000517:prevention & control*; D013209:Staphylococcal Vaccines / Q000008:administration & dosage / Q000276:immunology*; D013211:Staphylococcus aureus / Q000276:immunology; D014611:Vaccination
chemical_list: D000942:Antigens, Bacterial; D013209:Staphylococcal Vaccines
vernacular_title: Izuchenie khimicheskikh i immunogennykh svoĭstv kapsul'nogo antigena Staphylococcus aureus. Soobshchenie III. Issledovanie zashchitnoĭ aktivnosti kapsul'nogo antigena v opytakh na myshakh.