基于肝脏代谢组学的柴胡-白芍药对抗抑郁作用机制研究

The mechanism of the anti-depression effect of the Radix BupleuriRadix Paeoniae Alba herb pair determined by liver metabolomics

利用LC-MS代谢组学技术,分析柴胡-白芍药对对慢性不可预知温和应激抑郁(CUMS)大鼠肝脏内源性代谢物代谢紊乱的调控作用,明确柴胡-白芍药对“疏肝解郁”的代谢调控途径。将大鼠随机分为正常对照组、CUMS模型组、文拉法辛阳性药组和柴胡-白芍药对高、低剂量组,造模及给药持续28天。通过抑郁症传统药效学指标(大鼠体重、旷场实验、糖水偏爱实验及强迫游泳实验)评价柴胡-白芍药对的药效。动物实验获得山西大学伦理委员会的批准(批准号:SXULL2016036)。采用UHPLC-Q Exactive Orbitrap-MS代谢组学技术分析柴胡-白芍药对对CUMS模型大鼠肝脏代谢轮廓调节作用,探讨柴胡-白芍药对“疏肝解郁”的代谢调控机制。结果显示柴胡-白芍药对能显著改善CUMS模型组大鼠的抑郁样行为;通过LC-MS代谢组学技术共鉴定指认出25种与抑郁相关的生物标志物,柴胡-白芍药对能显著回调其中的16种;代谢通路分析显示D-谷氨酰胺和D-谷氨酸代谢,精氨酸和脯氨酸代谢,丙氨酸、天冬氨酸和谷氨酸代谢,谷胱甘肽代谢为其改善CUMS模型大鼠肝脏代谢紊乱的主要途径。

This study analyzed the effect of the Radix Bupleuri-Radix Paeoniae Alba herb pair on endogenous metabolites in rats with chronic unpredictable mild stress(CUMS)-induced depression by using LC-MS liver metabolomics. Rats were randomly divided into 5 groups: a normal control group, a CUMS model group, a venlafaxine-positive group, and a high-low dose group for the Radix Bupleuri-Radix Paeoniae Alba herb pair, with continuous modeling and administration over 28 days. The efficacy of Radix Bupleuri-Radix Paeoniae Alba herb pair was evaluated by measuring traditional pharmacodynamic indicators of depression(body weight, open field test, sucrose preference test and forced swimming test). Animal experimentation was approved by the Committee on the Ethics of Animal Experiments of Shanxi University(SXULL2016036). Liver metabolic profiles were obtained by the UHPLC-Q Exactive Orbitrap-MS metabolomics technique. The results show that the Radix Bupleuri-Radix Paeoniae Alba herb pair can significantly decrease depression-like behavior of rats in the CUMS model group. Increases in 25 depression-related metabolites were identified by LC-MS metabonomics, and the Radix Bupleuri-Radix Paeoniae Alba herb pair could significantly decrease 16 of them. Metabolic pathway analysis showed that D-glutamine and D-glutamate metabolism, arginine and proline metabolism, alanine, aspartate and glutamate metabolism, and glutathione metabolism were the main metabolic pathways altered by this herb pair in CUMS model rats.