Course treatment with diterpene alkaloids of Aconitum baicalense in mice reduced the time of immobilization in the tail suspension test and produced an antiexudative effect in mouse model of serotonin-induced edema. In the open field test, application of alkaloids did not change the total motor activity, orientation and exploratory behavior, and emotional reactions of animals. Experimental data suggest that diterpene alkaloids of Aconitum baicalensis exhibit antidepressant properties, possibly due to modulation of sensitivity to serotonin.
We compared analgesic activities of individual alkaloids extracted from Baikal aconite (Aconitum baikalensis): napelline, hypaconitine, songorine, mesaconitine, 12-epinapelline N-oxide. The detected analgesic activity was comparable to that of sodium metamizole. The mechanisms of analgesia were different in diterpene alkaloids of different structure. The antinociceptive effect of atisine alkaloids (12-epinapelline N-oxide, songorine) was naloxonedependent and realized via opioid receptor modulation.
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