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Effect of brucine on mouse nonspecific immune responses
Aim:
To evaluate the effect of brucine (Bru) i.p. at analgesic doses on the nonspecific immune responses in normal and cyclophosphamide (Cyc)-treated mice.
Methods:
The clearance of charcoal particles, the immune organ weights, the white blood cell counts in peripheral blood, the phagocytosis to neutral red (NR) of PMO and its IL-1 production in vitro were tested.
Results:
In normal mice, Bru slightly enhanced the clearance of charcoal particles, the phagocytosis of PMO, IL-1 production, the immune organ weights and the WBC counts (P > 0.05), whereas in Cyc-induced subnormal immunity model mice, Bru greatly enhanced these nonspecific immune responses (P < 0.05 or P < 0.01). The effects of Bru were most marked i.p. at 10 mg.kg-1 in vivo or 0.1-10 mg.L-1 in vitro.
Conclusion:
Bru i.p. at an analgesic dosage has dose- and function-dependent immunoregulatory effects.