Abstract
BackgroundDepression affects not only the central nervous system, but also the peripheral system. Xiaoyaosan (XYS), a classical traditional Chinese medicine (TCM) prescription, exhibits definite anti-depression effects demonstrated both clinically and experimentally. However, its compatibility has not been entirely revealed due partly to the complex compositions of herbs contained. AimBased on the strategy of “Efficacy Group”, this study aimed to reveal the compatibility of XYS from the perspective of “gut-liver-kidney” axis. MethodsFirstly, XYS was divided into two efficacy groups, i.e. Shugan (SG) and Jianpi (JP) groups. Classic behaviors of rats were measured to confirm the anti-depression effects of XYS and its two efficacy groups. On top of this, gut microbiota analysis and kidney metabolomics were performed by 16S rRNA sequencing and 1H NMR, respectively. ResultsWe found that XYS and its efficacy groups significantly regulated the abnormalities of behaviors and kidney metabolism of depressed rats, as well as intestinal disorders, but to different degrees. The regulatory effects of XYS and its efficacy groups on behaviors and kidney metabolomics of depressed rats had the same order, i.e. XYS > SG > JP, while the order of regulating gut microbiota was XYS > JP > SG. Both XYS and its efficacy groups significantly ameliorated gut microbiota disturbed, especially significant modulation of Peptostreptococcaceae. XYS significantly regulated nine kidney metabolites, while SG and JP regulated four and five differential metabolites, respectively, indicating that the two efficacy groups synergistically exhibited anti-depression effects, consequently contributing to the overall anti-depression effects of XYS. ConclusionThe current findings not only innovatively demonstrate the anti-depression effects and compatibility of XYS from the perspective of “gut-liver-kidney” axis, comprehensively using “Efficacy Group” strategy, macro behavioristics, metabolome and microbiome, and also provide a new perspective, strategy, and methodology for studying complex diseases and the compatibility of TCMs.
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