法医学杂志 ›› 2021, Vol. 37 ›› Issue (5): 653-660.DOI: 10.12116/j.issn.1004-5619.2020.301003

• 论著 • 上一篇    下一篇

应用UPLC-QTOF-MS分析滇乌头碱中毒大鼠尿液非靶向代谢组学

周惠黠1(), 刘欢2, 韩雪1, 聂胜洁1, 张荣平3,4, 于建云1(), 李树华1()   

  1. 1.昆明医科大学法医学院,云南 昆明 650500
    2.昆明医科大学司法鉴定中心,云南 昆明 650500
    3.昆明医科大学药学院,云南 昆明 650500
    4.云南中医药大学中药学院,云南 昆明 650500
  • 收稿日期:2020-10-27 发布日期:2021-10-25 出版日期:2021-10-28
  • 通讯作者: 于建云,李树华
  • 作者简介:于建云,男,教授,从事法医病理与毒理学研究;E-mail:jianyunyu@sina.com
    李树华,女,高级实验师,主要从事法医毒物学研究;E-mail:2530428326@qq.com
    周惠黠(1996—),女,硕士研究生,主要从事法医病理与毒理学研究;E-mail:764267288@qq.com
  • 基金资助:
    云南省创新团队资助项目(202005AE160004);国家重点研发计划资助项目(2018YFC0807201-4)

Application of UPLC-QTOF-MS in Analysis of Non-targeted Urine Metabolomics in Rats with Yunaconitine Poisoning

Hui-xia ZHOU1(), Huan LIU2, Xue HAN1, Sheng-jie NIE1, Rong-ping ZHANG3,4, Jian-yun YU1(), Shu-hua LI1()   

  1. 1.School of Forensic Medicine, Kunming Medical University, Kunming 650500, China
    2.Judicial Expertise Center, Kunming Medical University, Kunming 650500, China
    3.School of Medicine, Kunming Medical University, Kunming 650500, China
    4.School of Traditional Chinese Pharmacy, Yunnan University of Traditional Chinese Medicine, Kunming 650500, China
  • Received:2020-10-27 Online:2021-10-25 Published:2021-10-28
  • Contact: Jian-yun YU,Shu-hua LI

摘要: 目的

通过非靶向代谢组学研究滇乌头碱慢性中毒大鼠尿液代谢谱的变化,探讨滇乌头碱中毒的可能机制。

方法

建立滇乌头碱大鼠中毒模型,采用基于超高效液相色谱-四极杆飞行时间质谱(ultra performance liquid chromatography-quadrupole-time of flight mass spectrometry,UPLC-QTOF-MS)技术的代谢组学方法,获得尿液代谢轮廓,应用主成分分析(principal component analysis,PCA)、正交偏最小二乘法-判别分析(orthogonal projections to latent structures-discriminant analysis,OPLS-DA),依据变量投影重要度(variable importance in projection,VIP)>1、变化倍数(fold change,FC)>3或<0.33、P<0.05筛选出与滇乌头碱毒性相关的潜在生物学标志物,通过MetaboAnalyst网站进行代谢通路分析,同时观察相关组织的病理学改变。

结果

筛选出L-异亮氨酸等16个潜在生物学标志物,主要涉及缬氨酸、亮氨酸与异亮氨酸的生物合成、降解,戊糖和葡萄糖醛酸的相互转化,丙酸代谢,丙氨酸、天冬氨酸和谷氨酸代谢,酪氨酸代谢等6条代谢通路。病理学研究可见滇乌头碱导致的大鼠神经系统、肝和心脏毒性病变。

结论

滇乌头碱可能通过影响氨基酸和糖代谢,产生神经系统、肝和心脏等毒性。

关键词: 法医毒理学, 代谢组学, 中毒, 滇乌头碱, 超高效液相色谱-四极杆-飞行时间质谱, 尿液, 大鼠

Abstract: Objective

To explore the possible mechanism of Yunaconitine poisoning by studying the changes of urine metabolic profile in rats chronically poisoned by Yunaconitine via non-targeted metabolomics.

Methods

A rat model of Yunaconitine poisoning was established, and a metabolomics method based on UPLC-QTOF-MS technology was used to obtain the urine metabolic profile. Principal component analysis (PCA), orthogonal projections to latent structures-discriminant analysis (OPLS-DA), variable importance in projection (VIP) value greater than 1, fold change (FC) value greater than 3 or less than 0.33 and P value less than 0.05 were used to screen potential biomarkers related to the toxicity of Yunaconitine. The metabolic pathway analysis was performed through the MetaboAnalyst website and pathological changes of related tissues were observed.

Results

Sixteen potential biomarkers including L-isoleucine were screened, which mainly involved six metabolic pathways including the biosynthesis and degradation of valine, leucine and isoleucine, pentose and glucuronate interconversions, and propanoate metabolism, alanine, aspartate and glutamate metabolism, tyrosine metabolism. Pathological studies showed that rat toxic change in nervous system, liver and cardiac caused by Yunaconitine.

Conclusion

Yunaconitine may cause neurotoxicity, hepatotoxicity and cardiotoxicity by affecting amino acid and glucose metabolism.

Key words: forensic toxicology, metabolomics, poisoning, Yunaconitine, ultra performance liquid chromatography coupled with quadrupole-time of flight-mass spectrometry, urine, rats

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