目的：运用代谢组学核磁共振技术找出小青龙汤证大鼠尿液中的生物标志物，为小青龙汤证的临床诊断和治疗提供客观依据。方法：对空白对照组、模型组和小青龙汤组大鼠的尿液进行核磁共振氢谱检测，经MestRenova预处理和积分后，再用SIMCA-P+进行偏最小二乘法判别分析，得到相应的散点图和载荷图，进行比较后找出差异性代谢物。结果：与空白对照组比较，模型组中肌酸酐、胍基乙酸、三甲胺、牛磺酸、尿囊素等代谢物含量升高，琥珀酸、2-酮戊二酸、乳酸、甘氨酸、甲基烟碱等代谢物含量降低。用药后小青龙汤组中肌酸酐、三甲胺、尿囊素、牛磺酸与空白对照组比较明显升高，但与模型组比较明显降低；乳酸与空白对照组比较明显降低，但与模型组比较明显升高，胍基乙酸、2-酮戊二酸、N-甲基烟碱的改变则无统计学意义。结论：经分析可以看出，所找出的这些物质主要与能量代谢、炎症反应和免疫抵抗力有关，与能量代谢相关的物质变化尤为明显。%Through the map analysis of various metabolites in rat's urine, the biomarkers in syndrome suitable for Small Qing-Long Decoction (SQLD) were found out, which provided objective basis for the clinical diagnosis and treatment. Based on the rat's urine nuclear magnetic resonance (NMR) spectrum detection of the blank control group, the model group and the SQLD group, the data come from the map by MestRenova pretreatment and integration were analyzed using SIMCA-P+ by (PLS-DA). Then, the corresponding scatter diagram and diagram of loading were re-ceived and the differences of metabolites were found out by the comparison . The results showed that compared with the blank control group, contents of creatinine, guanidinoacetic acid, trimethylamine, taurine, allantoin metabolites in the model group had elevated. And the contents of succinic acid, 2-OG, lactic acid, glycine, methyl nicotine metabolite had decreased. After medication, contents of creatinine, trimethylamine, allantoin, taurine of SQLD group were still higher than the blank control group. However, the contents were reduced compared with the model group. The content of lactic acid was lower than the blank control group, but higher than the model group. There was no statistical significance on changes of guanidinoacetic acid, 2-OG, N-nornicotine. It was concluded that substances found were mainly related to energy metabolism, inflammation and immune resistance, which was especially related to energy metabolism change obviously.
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