Comparative Metabolomic Analysis of the Neuroprotective Effects of Scutellarin and Scutellarein against Ischemic Insult

PLoS One. 2015 Jul 6;10(7):e0131569. doi: 10.1371/journal.pone.0131569. eCollection 2015.

Abstract

For more than thirty years, scutellarin (Scu) has been used in China to clinically treat acute cerebral infarction and paralysis. Scutellarein (Scue), the major Scu metabolite in vivo, exhibits heightened neuroprotective effects when compared to Scu. To explore the neuroprotective role of these compounds, we performed ultra-high-performance liquid chromatography-quadrupole/time-of-flight mass spectrometry (UHPLC-QTOF/MS) coupled with a pattern recognition approach to investigate metabolomic differences in a rat model of ischemia after treatment with each compound. We examined metabolites in urine, hippocampal tissue, and plasma, and we tentatively identified 23 endogenous metabolites whose levels differed significantly between sham-operated and model groups. Upon pathway analysis, we found an additional 11 metabolic pathways in urine, 14 metabolic pathways in the hippocampal tissue, and 3 metabolic pathways in plasma. These endogenous metabolites were mainly involved in sphingolipid metabolism, lysine biosynthesis, and alanine, aspartate, and glutamate metabolism. We found that metabolic changes after ischemic injury returned to near-normal levels after Scue intervention, unlike Scu treatment, further validating the heightened protective effects exerted by Scue compared to Scu. These results demonstrate that Scue is a potential drug for treatment of ischemic insult.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Apigenin / pharmacology*
  • Brain Ischemia / drug therapy*
  • Brain Ischemia / metabolism*
  • Drugs, Chinese Herbal / pharmacology
  • Glucuronates / pharmacology*
  • Male
  • Metabolome / drug effects*
  • Metabolomics / methods
  • Neuroprotective Agents / pharmacology*
  • Rats
  • Rats, Wistar

Substances

  • Drugs, Chinese Herbal
  • Glucuronates
  • Neuroprotective Agents
  • scutellarin
  • Apigenin
  • scutellarein

Grants and funding

National Natural Science Foundation of China (81001382), the Program for New Century Excellent Talents by the Ministry of Education (NCET-12-0741), Six Talents Project Funded by Jiangsu Province (2013-YY-010), 333 High-level Talents Training Project Funded by Jiangsu Province, Technology Innovation Venture Fund by Nanjing University of Chinese Medicine (CX201301), Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization (ZDXMHT-1-13), A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).