No abstract

Rotation stress activated spontaneous and zymosan-induced ROS production. In animals receiving naloxone against the background of rotation stress, ROS production did not increase. Immobilization stress did not change the intensity of spontaneous and zymosan-induced ROS production, but inhibited stimulated ROS production against the background of naloxone treatment. Rotation produced a naloxone-independent inhibitory effect on spontaneous and stimulated IL-1β and TNFα production by macrophages and naloxone-dependent stimulating effect on spontaneous IL-10 production. Rotation stress did not modulate stimulated IL-10 production. In case of immobilization stress, decreased IL-1β and TNFα production was observed in mice exposed to stress under conditions of opiate receptors blockade; IL-10 production was not affected by immobilization stress. Both types of stress significantly increased plasma corticosterone levels, while naloxone had no effect on corticosterone production.