Determination of antidepressant activity of cinnamaldehyde per se and its interaction with escitalopram using tail suspension test in swiss albino mice
Keywords:
TCADs, SSRI, BDF, Neurotic disorder, Neurotransmitter.Abstract
Cinnamon is one of the best-known spices used as an herbal medicine. Cinnamaldehyde (CNM) is the most important constituents of cinnamon.
Objectives : The present study was aimed to evaluate the antidepressant activity of CNM per se & its interaction with standard antidepressant drug, escitalopram in Swiss albino mice using tail suspension method.
Method : Healthy mice of either sex weighing 20-30 grams were divided into groups of 6 animals each. For this CNM (100, 200 & 400 mg/kg), escitalopram 10 mg/kg & combination (CNM 100/200 mg/kg + escitalopram 10 mg/kg) were given orally daily for 21 days. TST was done on 1st, 7th, 14th, & 21st day.
Results : On acute administration escitalopram as well as CNM at lower doses i.e.100mg/kg showed the antidepressant activity as compared to control. (p< 0.05) however at higher doses of 200 & 400 mg/kg CNM did not show any effect. While on sub acute and chronic administration of CNM for 14 and 21 days respectively, CNM (100 mg/kg) has antidepressant activity (p< 0.05), while increasing doses of 200 and 400 mg/kg did not change any time of immobilisation significantly as compared to control but when CNM 200mg/kg was given in combination with escitalopram 10mg/kg, decrease in the antidepressant effect of escitalopram was observed.
Conclusions : CNM at lower dose alone as well as in combination with escitalopram showed antidepressant activity in both acute and chronic study while at higher dose i.e. 200/400 mg/kg did not. But combination of CNM 200mg/kg with escitalopram showed decrease in the antidepressant effect only on chronic administration.
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