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Changes in the Serum Metabolome of Acute Myocardial Ischemia Rat Pretreatment with Electroacupuncture.

Authors
  • Zhang, Hong-Ru1
  • Tao, Jia-Lei2
  • Bai, Hua1
  • Yang, Eun-Mee1
  • Zhong, Ze-Hao1
  • Liu, Xin-Tong1
  • Gu, Yi-Huang1
  • Lu, Sheng-Feng1, 3
  • 1 *The No.2 Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, P. R. China. , (China)
  • 2 ‡Jiangsu Key Laboratory of Paediatric Respiratory Disease, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, P. R. China. , (China)
  • 3 †Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, P. R. China. , (China)
Type
Published Article
Journal
The American journal of Chinese medicine
Publication Date
Jan 01, 2019
Volume
47
Issue
5
Pages
1025–1041
Identifiers
DOI: 10.1142/S0192415X19500526
PMID: 31327237
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Myocardial infarction (MI), the most common symptom is chest pain, occurs when blood flow decreases or stops to a part of the heart, causing damage to the heart muscle. Electroacupuncture pretreatment (EP) is a recent observation which has been shown to induce ischemic tolerance like the ischemia preconditioning, suggesting that EP may be a promising preventive strategy for individual susceptibility to MI. This study investigated mechanisms that underlie the effect of EP on MI through the use of gas chromatography-mass spectrometry (GC-MS)-based metabolic profiling. Male Sprague-Dawley rats were randomly divided to receive or not receive three days of EP at PC6 (Neiguan). Then on the fourth day, each group was further divided to undergo mock surgery or MI, induced by ligation of the left anterior descending coronary artery. After 24h, the blood samples and hearts were collected for the follow-up research. The results showed that treatment by EP significantly reduced the levels of CK-MB, cTnT, AST, and MDH in serum and decreased myocardial infarction area. According to GC-MS-based serum metabolic profiling and analysis, a total of 636 characteristic peaks were identified, including 158 known and 478 unknown metabolites. MI caused comprehensive metabolic changes in glycolysis-related metabolites, malate-aspartate shuttle (MAS) metabolites, and purine metabolites with anti-oxidant functions, while EP reversed more than half of the differential metabolic changes, mainly affecting amino acid and energy metabolism, especially the glutamate metabolism and MAS. In a word, our findings suggest that EP exerts its cardioprotective effect on MI by regulating amino acid and energy metabolisms. Meanwhile, GC-MS-based metabolomics provided a powerful way to characterize the metabolic features of MI, with and without EP, and thereby improved our understanding of the effect and mechanisms of EP.

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