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  • Title: Ginsenoside Rb1 prevents lipopolysaccharide-induced depressive-like behavior by inhibiting inflammation and neural dysfunction and F2 elicits a novel antidepressant-like effect: A metabolite-based network pharmacology study.
    Author: Liang W, Liu Y, Zhou K, Jian P, Zhang Q, Chang Z, Wu L, Chang H, Zhang L.
    Journal: J Ethnopharmacol; 2022 Jan 10; 282():114655. PubMed ID: 34537284.
    Abstract:
    ETHNOPHARMACOLOGICAL RELEVANCE: Inflammatory responses are associated wieh the pathophysiology of depression. Ginsenoside Rb1 (Rb1) exerts antidepressant effect, but the relationship between its activity and inflammation remains unclear. AIM OF THE STUDY: In this study, the antidepressant-like effect and underlying mechanisms of Rb1 were been investigated. MATERIALS AND METHODS: The neuroinflammatory mouse model of lipopolysaccharide (LPS)-induced acute depression-like behavior was employed to detect the action of Rb1. An integrative strategy combining the identification of prototype (Rb1) and its metabolites in vivo with network pharmacology analysis was used to explore therapeutic mechanisms of these ingredients. The putative targets and signalings were experimentally validated. The antidepressant-like effect of F2, the metabolite of Rb1, was firstly evaluated. RESULTS: Rb1 significantly ameliorated LPS-induced depressive-like behavior. Rb1 and its metabolites (Rd, F2, compound K, Rh2, Rg3, PPD) were identified and then a disease-component-target network was established. Experimental validation showed that Rb1 inhibited peripheral and hippocampal inflammation via MAPK/NF-κB signaling. In inflammatory-mediated depression state, Rb1 improved impaired glucocorticoid receptor, suppressed indoleamine 2,3-dioxygenase activity, increased 5-HT level and 5-HT1A receptor expression. Additionally, F2 was firstly discovered to exert antidepressant-like effect, and it existed higher activity than Rb1 against depression. CONCLUSION: The study highlighted the potential of Rb1 and F2 as healthy supplement or agent for inflammation-induced depression.
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