基于UPLC-Q/TOF-MS的丹参-川芎对局灶性脑缺血大鼠保护作用的脂质组学研究

目的研究丹参-川芎水煎液冻干物对局灶性脑缺血模型大鼠脂质代谢异常的调节作用。方法采用线栓法复制大鼠局灶性脑缺血模型,将SD大鼠随机分为对照组、假手术组、模型组及丹参-川芎干预组。末次给药后采集血浆,采用超高效液相色谱四级杆飞行时间质谱联用仪(UPLC-Q/TOF-MS)进行血浆脂质组学研究,采用正交偏最小二乘判别分析(OPLS-DA)处理脂质组学数据,考察丹参-川芎干预前后脂质代谢物组变化。结果成功复制了大鼠局灶性脑缺血模型,丹参-川芎水煎液冻干物对局灶性脑缺血大鼠异常脂质代谢表现出明显的改善作用,大鼠脑缺血损伤血浆脂质标志物为PS(21:0/0:0)、PG(12:0/17:0)、C16 sphinganine,phytosphingosine、PE [18:1(9Z)/0:0]、PC(16:1/2:0)、PC(0:0/18:0)、PC(16:1/0:0)、PC(16:0/0:0)、PC(18:2/0:0)、PC(18:1/0:0)、PC(18:0/0:0)、PC(20:5/0:0)。结论丹参川芎水煎液冻干物具有脑缺血损伤保护作用,其机制可能与其对脂质,尤其是磷脂酰胆碱(PC)的调节有关。

Lipidomics study of protective effect of Salvia miltiorrhiza and Ligusticum chuanxiong on rats with focal cerebral ischemia injury based on UPLC-Q/TOF-MS

Objective To study the regulating effect of freeze-dried substances of Salvia miltiorrhiza and Ligusticum chuanxiong Decoction on lipid metabolism abnormality in focal cerebral ischemia rats. Methods The focal cerebral ischemia rat model was established by monofilament method. The rats were randomly divided into normal group, sham operation group, model group, and drug treatment group. Plasma was collected after the last dosage and UPLC-Q/TOF-MS was used to study the plasma lipidomics. The lipidomics data were analyzed by orthogonal partial least square discriminant analysis (OPLS-DA), and the lipid metabolites changes were examined before and after the intervention of S. miltiorrhiza and L. chuanxiong. Results The focal cerebral ischemia rat model was successfully repeated. The S. miltiorrhiza and L. chuanxiong Decoction freeze-dried substances obviously reversed the abnormal lipid metabolism profile in the focal cerebral ischemia rat model. The plasma lipid biomarkers of ischemia injury rat were PS (21:0/0:0), PG (12:0/17:0), C16 sphinganine, phytosphingosine, PE[18:1 (9Z)/0:0], PC (16:1/2:0), PC (0:0/18:0), PC (16:1/0:0), PC (16:0/0:0), PC (18:2/0:0), PC (18:1/0:0), PC (18:0/0:0), and PC (20:5/0:0), respectively. Conclusion S. miltiorrhiza and L. chuanxiong Decoction freeze-dried substances have protective effects on cerebral ischemia injury, which may be related to the regulation of abnormal lipid metabolism, especially for phosphatidylcholines (PCs).