Aim To investigate the changes of serum metabolism after the treatment of DOA and DOO on myocardial ischemia reperfusion ( MI/R ) injury in rats, and to explore the pathogenesis of MI/R injury and drug action mechanism. Method The serum samples of Sham group, Model group, DOA group and DOO group of rats were acquired, gas phase time of flight mass spectrometry ( GC-TOF-MS) was applied to analyze the metabolic profiles of the samples. After da-ta preprocessing, they were processed into SIMCA 14. 1 software for multivariate statistical analysis. Results By principal components analysis ( PCA ) , partial least squares analysis ( PLS-DA) and orthogonal partial least squares analysis ( OPLS-DA ) , the Model group and Sham group were obviously separated, the drug in-tervention group and Model group were separated and close to Sham group. The therapeutic effect of DOO and DOA on MI/R injury in rats was proved. The ex-perimental results identified 13 endogenous biomark-ers, which were related to the glucose metabolism,lipid metabolism and amino acid metabolism pathway. Con-clusion DOA and DOO may protect the MI/R injured rats by regulating the glucose metabolism, lipid metab-olism and amino acid metabolism pathway.%目的：研究心肌缺血/再灌注( MI/R)损伤大鼠经降香水提物( DOA)和降香挥发油( DOO)治疗后血清代谢物的变化，探讨MI/R损伤发病及药物作用机制。方法采集假手术组、MI/R模型组、DOA给药组和DOO给药组大鼠的血清样本，应用气相飞行时间质谱联用系统( GC-TOF-MS )对样本进行代谢图谱分析，将数据预处理后导入SIMCA 14．1软件进行多元统计学分析。结果经主成分分析( PCA)、偏最小二乘法分析( PLS-DA)及正交偏最小二乘法分析( OPLS-DA)，模型组与假手术组明显分离，给药组与模型组分离，并向假手术组靠近，在代谢组学的角度证明了DOA和DOO对MI/R损伤大鼠的治疗作用，实验共分析鉴别出13个内源性生物标记物，分别与糖代谢、脂代谢和氨基酸代谢通路相关。结论 DOA和DOO可以对MI/R损伤大鼠起到很好的保护作用，推测其可能是通过调节糖代谢、脂代谢和氨基酸代谢通路而发挥作用。
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