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Dernière publication 22/02/2022

Pedicularis resupinata restores corticosterone induced depressive-like behaviors

Excessive corticosterone (CORT), resulting from a dysregulated hypothalamicÐpituitaryÐadrenal (HPA) axis, is associated with cognitive impairment...

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    [title] => Pedicularis resupinata restores corticosterone induced depressive-like behaviors
    [paragraph] => Pedicularis resupinata restores corticosterone induced depressive-like behaviors in mice via glucocorticoid receptor-mediated BDNF expression
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Authors
DW Lim, D Han, C Lee 

 Lab
Korea Food Research Institute, Iksan, Cholla-bukto, South Korea
Journal
Research Square
Abstract
Excessive corticosterone (CORT), resulting from a dysregulated hypothalamicÐpituitaryÐadrenal (HPA) axis, is associated with cognitive impairment and behavioral changes, including depression. In Eastern medicine, Pedicularis resupinata var. oppositifolia (Scrophulariaceae) is used for the treatment of rheumatoid arthritis, malignant abscesses (tumors), uroliths, and diuretics. However, the antidepressant properties of P. resupinata have not been well characterized. Here, the antidepressant-like effects of P. resupinata extract (PRE) were evaluated in in vivo and in vitro CORT-induced depression models. HPLC confirmed that acteoside, a phenylethanoid glycoside, was a major PRE compound from. Male ICR mice (8 weeks old) were injected with CORT (40 mg/kg) and orally administered PRE daily (30, 100, and 300 mg/kg) for 21 consecutive days. Depressive-like behaviors were evaluated using the open field test, sucrose preference test, passive avoidance test, tail suspension test, and forced swim test. Treatment with a high dose of PRE significantly alleviated CORT-induced depression-like behaviors in mice and reduced neurotoxicity in a concentration-dependent manner in SH-SY5Y cells. Additionally, repeated CORT injection markedly reduced brain-derived neurotrophic factor (BDNF) levels, whereas total glucocorticoid receptor (GR) and GR phosphorylation at serine 211 were significantly increased in the mice hippocampus, but improved by PRE treatment. Thus, our findings suggest that PRE have potential antidepressant-like effects by modulating GR-mediated BDNF expression in the CORT-induced depressive mice model.
BIOSEB Instruments Used
Tail Suspension Test - Wireless (BIO-TST5)

Keywords/Topics
Dépression
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