Abstract
The engulfing, bactericidal and degrading activities toSalmonella typhi, strain ty2-4446 and 0-901 and toSalmonella enteritidis of guinea pig macrophages obtained from peritoneal exudate, spleen and bone marrow that were cultivated for 2–7 days, were studied. The phagocytic activity was expressed as a total number of phagocytosed microbes and the number of viable bacteria, released from mechanically disrupted macrophages. The ratio of phagocytosed bacteria to the original number of bacteria that were introduced to macrophage cultures, were evaluated in per cents. No significant difference in phagocytic activity was found between macrophages submitted to thein vitro cultivation and macrophages freshly isolated from the organism. Profound variations in phagocytic activity of cells were found which were partially dependent on the dose of microbes employed for the infection of cultures. Furthermore, both the engulfing and bactericidal activity of peritoneal macrophages toSalmonella typhi were found to be higher than in bone morrow macrophages.Salmonella typhi 0-901 microbes were phagocytosed by macrophages from bone marrow and peritoneal exudate much better thanSalmonella typhi ty2. In addition, a significant delay in bactericidal activity toSalmonella typhi ty2 of bone marrow macrophages in comparison to peritoneal macrophages was observed. The spleen macrophages possessed better phagocytic and killing activity toSalmonella enteritidis than bone marrow macrophages. A striking difference was found as regards the intracellular growth ofSalmonella typhi andSalmonella gertneri: no multiplication ofSalmonella typhi within the peritoneal and bone marrow macrophages was observed during the 3–5 h cultivation, whereas on the other hand,Salmonella gertneri started to grow intracellularly within the 5 h cultivation in the bone marrow macrophages.
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Kamzolkina, N.B., Zakharova, N.S. Thein vitro phagocytic activity of guinea-pig macrophages toSalmonella typhi andSalmonella enteritidis . Folia Microbiol 18, 324–331 (1973). https://doi.org/10.1007/BF02868051
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DOI: https://doi.org/10.1007/BF02868051