Standardised ginseng extract G115® potentiates the antidepressant-like properties of fluoxetine in the forced swim test.

Abstract:

OBJECTIVE:Ginsenosides, biologically-active components of the root of Panax ginseng, have been reported to have therapeutic benefits in a number of disease states including psychiatric conditions such as major depressive disorder. Our objective was to determine if a standardized commercial ginseng extract, G115®, could reduce the signs of behavioural despair commonly observed in animal models of depression either alone or in combination with the selective serotonin reuptake inhibitor fluoxetine. METHODS:Male Sprague-Dawley (SD) rats (N=51) were divided into four groups: vehicle control, G115® ginseng root extract, fluoxetine and fluoxetine plus G115®. Rats were trained to voluntarily consume treatments twice daily for 14 days and were then tested in an open field (OF), elevated plus maze (EPM) and forced swim test (FST). Post-mortem hippocampal and prefrontal cortex tissue was analysed for expression of brain derived neurotrophic factor (BDNF) and tropomyosin receptor kinase B (TrkB) by Western Blot. RESULTS:One-way ANOVA revealed no significant group differences in open field or plus maze performance on any variable examined. In the forced swim test fluoxetine significantly reduced immobility time and increased latency to immobility. The effects of fluoxetine were further significantly potentiated by co-administration of G115®. Post-mortem tissue analysis revealed significant group differences in BDNF expression in the left hippocampus and left prefrontal cortex without any accompanying changes in TrkB expression. CONCLUSIONS:We conclude that oral G115® significantly potentiates the antidepressant-like effect of fluoxetine in the forced swim test in the absence of potentially confounding effects on locomotion and anxiety.

journal_name

Acta Neuropsychiatr

journal_title

Acta neuropsychiatrica

authors

Terstege DJ,MacDonald DS,Tasker RA

doi

10.1017/neu.2021.2

subject

Has Abstract

pub_date

2021-01-22 00:00:00

pages

1-29

eissn

0924-2708

issn

1601-5215

pii

S0924270821000028

pub_type

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