| Abstract: | Generalized nonlethal infection was induced in guinea pigs by the intramuscular injection of 10(10) S. aureus cells, and on days 1, 3 and 5 after inoculation a half of the animals received antistaphylococcal hyperimmune human plasma intraperitoneally in a dose of 2 ml (6 AU/ml) per animal. This plasma decreased the number of staphylococcal colonies in the spleen and affected mainly the system of phagocytes (neutrophils): on day 3 the percentage of neutrophils with Fc gamma R increased in the treated guinea pigs in comparison with the controls and with the initial level; from day 6 the percentage of active neutrophils with Fc gamma R increased in the treated animals in comparison with the controls; on day 14 the percentage of such neutrophils increased in comparison with the initial level as well, and the treated guinea pigs also showed an increase in the content of lymphocytes with receptors for staphylococci in comparison with the controls. There was little difference in the content of neutrophils with CR, as well as in the percentage of active phagocytes with these receptors, in the treated animals and in the controls. By the moment of the resolution of generalization (day 14) the content of active T-lymphocytes increased in the treated guinea pigs in comparison with the controls and with the initial level; simultaneously the levels of B-lymphocytes and B-lymphocytes with receptors for mouse red blood cells returned to their initial values. |
