基于代谢组学技术的白芍养血柔肝作用机制研究

目的通过分析血虚肝郁模型大鼠血清内源性代谢物的变化,利用代谢组学技术研究白芍对异常代谢物的调节作用,探讨白芍养血柔肝功效的作用机制。方法采用辐照复合慢性束缚应激方法建立大鼠血虚肝郁模型,以液质联用为核心技术,以主成分分析(PCA)、偏最小二乘判别分析(PLS-DA)方法为数据分析的主要手段,筛选出可能的生物标志物,并分析白芍的干预机制。结果白芍通过影响磷脂酰胆碱、溶血磷脂酰胆碱、神经酰胺、脱氧胞苷、甜菜碱等21种小分子代谢物,对体内代谢轨迹的扰动起到一定的回调作用,能够改善大鼠因外界刺激因素(如辐照、束缚、孤养)诱发的血虚肝郁状态。结论白芍养血柔肝功效的作用机制可能与鞘脂代谢、甘油磷脂代谢、亚油酸代谢、α-亚油酸代谢等相关代谢通路有关。

Study on mechanism of nourishing blood and smoothing liver effects of Paeoniae Radix Alba based on metabolomics information

Objective To investigate the nourishing blood and smoothing liver effects of Paeoniae Radix Alba (PRA) based on metabolomics information. Methods The stagnation of liver qi and blood deficiency syndrome rats model was established by chronic restraint stress combined with radiation. Using LC/MS method as the core technology, the principal component analysis (PCA) and partial least squares discriminate analysis (PLS-DA) as the main data analysis methods, endogenous metabolites were screened in the model rats to study the intervention mechanism of PRA. Results Through the impact of phosphatidylcholine, lysophosphatidylcholine, ceramide, deoxycytidine, betaine, and other 21 kinds of small molecular metabolites, PRA had a certain callback effect on the disturbance of metabolic trajectory, which can improve the state of stagnation of liver qi and blood deficiency induced by external stimulating factors (such as irradiation, restraint, and loneliness). Conclusion The nourishing blood and smoothing liver effects of PRA may be related to the sphingolipid metabolism, glycerophospholipid metabolism, linoleic acid metabolism, and alpha-linolenic acid metabolism.