高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (4): 626.doi: 10.7503/cjcu20150826

• 分析化学 • 上一篇    下一篇

多批次肝衰竭患者呼出气体的电喷雾萃取电离质谱检测及代谢组学数据分析

李鹏辉1, 邓伶莉1,2, 罗娇3, 李巍3, 宁晶1, 丁健桦1, 邬小萍3()   

  1. 1. 东华理工大学江西省质谱科学与仪器重点实验室, 南昌 330013
    2. 东华理工大学信息工程学院, 南昌 330013
    3. 南昌大学第一附属医院, 南昌 330123
  • 收稿日期:2015-10-27 出版日期:2016-04-10 发布日期:2016-03-18
  • 基金资助:
    江西省重大科技创新研究项目(批准号: 20124ACB00700)、 长江学者和创新团队发展计划项目(批准号: IRT13054)和国家自然科学基金(批准号: 21265002)资助

EESI-MS Detection and Statistical Analysis of Multi-batch of Exhaled Breath Metabolomics Data of Liver Failure Patients

LI Penghui1, DENG Lingli1,2, LUO Jiao3, LI Wei3, NING Jing1, DING Jianhua1, WU Xiaoping3*()   

  1. 1. East China University of Technology,Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation,Nanchang 330013, China
    2.East China University of Technology,Information Engineering College,Nanchang 3, China
    3.The First Affiliated Hospital of NanChang University,Nanchang 330123,China
  • Received:2015-10-27 Online:2016-04-10 Published:2016-03-18
  • Supported by:
    † Supported by the Jiangxi Major Scientific and Technological Innovation Research Project, China(No.2012ACB00700), the Program for Changjiang Scholars and Innovative Research Team in University, China(No.IRT13054) and the National Natural Science Foundation of China(No.21265002)

摘要:

采用高分辨电喷雾萃取电离质谱(EESI-MS)技术对肝衰竭患者和健康志愿者呼出气体样本进行快速检测, 结合多块偏最小二乘分析(MB-PLS)方法, 对多批次获取的呼出气体代谢数据进行统计建模分析, 并与传统的PLS方法进行比较. 结果表明, MB-PLS方法能有效消除批次差异对统计建模的影响. 此外, 利用MB-PLS模型变量VIP值对变量进行筛选, 可降低数据的冗余, 消除无关变量对模型的影响, 从而有效提高了模型的性能.

关键词: 呼出气体, 代谢组学, 电喷雾萃取电离质谱, 多块偏最小二乘分析

Abstract:

In metabolomics studies, the number of samples should be enough to guarantee the reliability of data statistical analysis. The effective storage time of exhaled breath is short, and it is difficult to collect and detect a large number of breath samples in a short time. Combining multi batches of samples may obtain a large data, but usually there is a large variance between batches induced by ambient air varying. In this paper, the exhaled breath data of liver failure patients and healthy volunteers were obtained by high resolution extractive electrospray ionization mass spectrometry(EESI-MS) and then analyzed by multi-block partial least square(MB-PLS). The results were compared with traditional PLS method and showed its strength of removing the variance of batches for modeling. Moreover, we provided a variable selection strategy that based on variable importance in the projection(VIP) of MB-PLS to reduce the redundancy of data and eliminate the effect of non-information variables for modeling, and the performance of MB-PLS model had a great improvement.

Key words: Exhaled breath, Metabolomics, Extractive electrospray ionization mass spectrometry, Multi-block partial least square analysis

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