Names and associated metabolic pathways for the identified metabolites in increasing order of their VIP values.

*Metabolites were identified by interpreting their fragmentation patterns (MS/MS spectra) and conducting a database search. LysoPC, lysophosphatidylcholine; PC, phosphatidylcholine; CDP, cytidine-5′-diphosphate; APGPR, Ala-Pro-Gly-Pro-Arg. **Human Metabolome Database. aVariable importance in the projection. All abbreviations used for pathways and reactions are from KEGG identifiers (http://www.genome.jp/kegg/kegg3.html).* 本数据集通过解析代谢物的碎裂模式（串联质谱（MS/MS）谱图）并开展数据库检索完成代谢物的鉴定。其中LysoPC为溶血磷脂酰胆碱（lysophosphatidylcholine），PC为磷脂酰胆碱（phosphatidylcholine），CDP为胞苷-5′-二磷酸（cytidine-5′-diphosphate），APGPR为丙氨酰-脯氨酰-甘氨酰-脯氨酰-精氨酸（Ala-Pro-Gly-Pro-Arg）。**人类代谢组数据库（Human Metabolome Database）**。a 为投影变量重要性（variable importance in the projection）。本研究中所有用于通路与反应的缩写均采用KEGG标识符（http://www.genome.jp/kegg/kegg3.html）。