How Radix Bupleurum and Radix Paeoniae Alba Together May Help Depression by Reducing Oxidative Stress, Balancing Brain Immune Responses, and Regulating Body Clocks
In stressed rats, the Chaihu-Baishao herb pair reduced depressive-like behaviors and shifted , neuroimmune, and circadian pathways.
Evidence
Preclinical rat experiment tested 4 weeks of CB water extract with behavioral assays, serum metabolomics, liver transcriptomics, bioinformatics integration, and experimental validation.
Caveat
The work is limited to a rat model and mechanistic omics validation, so human antidepressant efficacy is not established.
Simplified
OBJECTIVE: Based on the classical TCM formulation from Shennong's Classic of Materia Medica, the Bupleuri Radix-Paeoniae Radix Alba (Chaihu-Baishao, CB) herb pair has long been used to treat depression-like disorders associated with liver stagnation syndrome (ganyu zheng), embodying the TCM principle of shugan jieyu (soothing the liver and relieving depression). This study aims to systematically decipher the multi-target mechanisms underlying CB's antidepressant effects, bridging traditional use with modern systems pharmacology.
METHODS: We employed integrated metabolomics-transcriptomics and behavioral validation in a rat model of (CUMS). Rats were treated with CB water extract for four weeks, and antidepressant effects were assessed through behavioral tests. Serum metabolomics and liver transcriptomics were performed, followed by bioinformatics integration and experimental validation.
RESULTS: CB treatment significantly improved depressive-like behaviors, reversing anhedonia and reducing despair. Multi-omics integration revealed CB's actions across three key mechanistic domains:.
OXIDATIVE STRESS: Regulation of glutathione metabolism, notably reducing oxidized glutathione.
NEUROIMMUNE BALANCE: Modulation of PI3K/AKT and AMPK/SIRT1 pathways, accompanied by decreased pro-inflammatory cytokines.
CIRCADIAN RHYTHM: Normalization of core clock genes such as Cry2 and Per2.
CONCLUSION: The CB herb pair exerts antidepressant effects through synergistic modulation of , neuroimmune balance, and circadian rhythm, providing a systems-level validation of the TCM concept of shugan jieyu. These findings highlight the translational potential of CB as an integrative treatment for depression and offer a modern pharmacological basis for classical TM formulations.
Key numbers
68.2%
Reduction in Oxidized Glutathione
Percentage decrease in oxidized glutathione levels after treatment.
2.3×
Increase in BDNF Levels
Fold increase in brain-derived neurotrophic factor (BDNF) levels compared to the model group.
2.4×
Upregulation of Cry2
Fold increase in Cry2 gene expression in the CB treatment group.
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