Mice exposed to a chronic auditory stressor and daily injected with al
prazolam (1 mg/kg/day, s.c.) showed a reduction in stress-induced supp
ression of the in vitro and in vivo activity of phagocytosis, measured
using the zymosan particle uptake method and the carbon clearance tes
t, respectively. Pretreatment with Ro-15-1788 (10 mg/kg, s.c.), a cent
ral nervous system benzodiazepine antagonist, resulted in suppression
of the effects of alprazolam in stressed mice.