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[Changes in the oxygen-dependent metabolic activity of polymorphonuclear leukocytes from the peripheral blood and macrophages from the peritoneal exudate in the experimental infection of mice with the causative agent of plague].

The subcutaneous infection of C57BL/6J mice and noninbred white mice with 40 LD100 of Y. pestis virulent strain has been found to produce synchronous changes in the oxygen-dependent metabolism (ODM) of peripheral blood neutrophils in the spontaneous or zymosan-, E. coli- and Y. pestis-stimulated variants of the NBT test. These changes can be divided into three phases: (I) the phase of a sharp drop in ODM activity; (II) the phase of the increase of this activity, occurring simultaneously with the penetration of Y. pestis cells into the blood stream; and (III) the phase of the terminal decrease of ODM activity as the cytotoxic lesion of phagocytic cells occurs. Peritoneal exudate macrophages show a more gradual decrease in ODM activity. The infection of the animals with 40,000 LD100 of Y. pestis has been found to produce an increase in the ODM activity of neutrophils, rapidly followed by its decrease to the zero level. Macrophages show phasic changes in their ODM activity, identical to changes in the ODM values of neutrophils in mice infected with 40 LD100 of Y. pestis.