摘要
Objective:To evaluate the antinociceptive activity of perillyl acetate in mice and in silico simulations.Methods:The vehicle,perillyl acetate(100,150 and/or 200 mg/kg,i.p.),diazepam(2 mg/kg,i.p.)or morphine(6 mg/kg,i.p.)was administered to mice,respectively.Rotarod test,acetic acidinduced abdominal writhing,formalin-induced nociception,hot plate test,and tail-flick test were performed.Opioid receptorsinvolvement in perillyl acetate antinociceptive effect was also investigated.Results:Perillyl acetate did not affect the motor coordination of mice.However,it reduced the number of acetic acid-induced abdominal twitches and licking times in the formalin test.There was an increase of latency time in the tail-flick test of 30 and 60minutes.Pretreatment with naloxone reversed the antinociceptive effect of perillyl acetate(200 mg/kg).In silico analysis demonstrated that perillyl acetate could bind toμ-opioid receptors.Conclusions:Perillyl acetate has antinociceptive effect at the spinal level in animal nociception models,without affecting the locomotor integrity and possibly throughμ-opioid receptors.In silico studies have suggested that perillyl acetate can act as aμ-opioid receptor agonist.
基金
supported by funds from the Coordination for the Improvement of Higher Education Personnel(CAPES)
National Council for Scientific and Technological Development(CNPq)。
