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Published in: BMC Complementary Medicine and Therapies 1/2015

Open Access 01-12-2015 | Research article

Angelica gigas ameliorate depression-like symptoms in rats following chronic corticosterone injection

Authors: Bombi Lee, Bongjun Sur, Insop Shim, Hyejung Lee, Dae-Hyun Hahm

Published in: BMC Complementary Medicine and Therapies | Issue 1/2015

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Abstract

Background

Repeated injection of corticosterone (CORT) induces dysregulation in the hypothalamic-pituitary-adrenal (HPA) axis, resulting in depression. We examined the effects of Angelica gigas extract (AGN) treatment in a rat model of depressive and anxiety-like behaviors, induced by chronic CORT exposure.

Methods

Male rats received 10, 20, or 50 mg/kg AGN (i.p.) 30 min prior to a daily injection of CORT for 21 consecutive days. Activation of the HPA axis in response to the repeated CORT injections was confirmed by measuring serum levels of CORT and the expression of corticotropin-releasing factor in the hypothalamus.

Results

Daily AGN administration significantly reversed the depression and anxiety-like behavioral abnormalities. It also blocked increases in tyrosine hydroxylase expression in the locus coeruleus, and suppressed the decreased expression levels of brain-derived neurotrophic factor (BDNF) and its receptor TrkB mRNAs in the hippocampus.

Conclusions

These findings indicate that administration of AGN prior to high-dose exogenous CORT significantly improved helpless behaviors, possibly by modulating the central noradrenergic system and regulation of BDNF expression in rats. Thus, AGN may be a useful agent for the treatment or alleviation of psychiatric disorders associated with depression and anxiety disorders.
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Metadata
Title
Angelica gigas ameliorate depression-like symptoms in rats following chronic corticosterone injection
Authors
Bombi Lee
Bongjun Sur
Insop Shim
Hyejung Lee
Dae-Hyun Hahm
Publication date
01-12-2015
Publisher
BioMed Central
Published in
BMC Complementary Medicine and Therapies / Issue 1/2015
Electronic ISSN: 2662-7671
DOI
https://doi.org/10.1186/s12906-015-0746-9

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