The antidepressant-like effects of Origanum majorana essential oil on mice through monoaminergic modulation using the forced swimming test

Saeid Abbasi-Maleki ； Zohre Kadkhoda ； Rahim Taghizad-Farid

《Journal of Traditional and Complementary Medicine》 10卷4期 (2020/07) Pp. 327-335

https://doi.org/10.1016/j.jtcme.2019.01.003

摘要

Origanum majorana (L.) is an herb used in the treatment of diseases related to the nervous system in traditional medicine (e.g. as an anticonvulsant and sedative). The present study was conducted to investigate the antidepressant-like effects of Origanum majorana essential oil (OMEO) on mice in the forced swimming test (FST). The animals were intraperitoneally (i.p.) injected with OMEO (10-80 mg/kg) 1 h before the FST. To assess the involvement of the monoaminergic system in the antidepressant activity of OMEO, different pharmacological antagonists were administered 15 min before OMEO administration (80 mg/kg). The administration of OMEO (40 and 80 mg/kg, i.p.) decreased immobility time and increased swimming and climbing times significantly. OMEO did not cause any changes in spontaneous locomotor function in the open-field test (OFT). The pre-treatment of the animals with SCH23390, sulpiride, haloperidol, WAY100135, p-chlorophenylalanine (pCPA), ketanserin, prazosin, yohimbine, reserpine, but not propranolol, inhibited the anti-immobility effect of OMEO in the FST. A combination of sub-effective doses of fluoxetine (5 mg/kg, i.p.) or imipramine (5 mg/kg, i.p.) with OMEO (10 mg/kg, i.p.) increased the antidepressant-like effects. OMEO showed antidepressant-like effects through involvement with the dopaminergic (D_1 and D_2), serotonergic (5HT1_A, 5-HT2_A receptors) and noradrenergic (α_1 and α_2 adrenoceptors) systems.

關鍵字

Antidepressant ； Monoamines ； Forced swimming test ； Mice ； Origanum majorana

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