Abstract
Background
Ischemic stroke is one of the leading causes of death and adult disability. The incidence of ischemic stroke continues to rise in young adults. This study aimed to provide a comprehensive evaluation of metabolic changes and explore possible mechanisms in young ischemic stroke patients without common risk factors.
Methods
This study investigated serum metabolomics in 50 young patients with newly suffered ischemic stroke and 50 age-, sex-, and body mass index–matched healthy controls. Liquid chromatography coupled with a Waters Xevo TQ-S mass spectrometer with an electrospray ionization (ESI) source was used to analyze amino acid or bile acid, and free fatty acid or lipid was analyzed by liquid chromatography coupled with a Qtrap5500 mass spectrometer with an ESI source. The metabolomic data were analyzed by performing a multivariate statistical analysis.
Results
A total of 197 metabolites, including amino acids, bile acids, free fatty acids, and lipids, were identified in all participants. Multivariate models showed significant differences in serum metabolomic patterns between young patients with ischemic stroke and healthy controls. The stroke patients had increased L-methionine, homocysteine, glutamine, uric acid, GCDCA, and PE (18:0/20:4, 16:0/22:5), and decreased levels of L-citrulline, taurine, PC (16:2/22:6, 16:2/20:5, 15:0/18:2), and SM (d18:1/23:0, d20:0/19:1, d18:1/22:0, d16:0/26:1, d16:0/18:0, d16:0/22:1, d18:1/19:1, d16:0/17:1, d16:1/24:1, d18:1/19:0). Based on the identified metabolites, the metabolic pathways of arginine biosynthesis, glycerophospholipid metabolism, and taurine and hypotaurine metabolism were significantly enriched in the young patients with ischemic stroke.
Conclusions
Serum metabolomic patterns were significantly different between young patients with ischemic stroke and healthy controls. Our study is beneficial in providing a further view into the pathophysiology of young patients with ischemic stroke.
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Abbreviations
- BMI:
-
Body weight index
- TC:
-
Total cholesterol
- HDL-C:
-
High-density lipoprotein cholesterol
- LDL-C:
-
Low-density lipoprotein cholesterol
- TG:
-
Triglycerides
- UA:
-
Uric acid
- ESI:
-
Electrospray ionization
- CV:
-
Coefficients of variation
- QC:
-
Quality control
- VIP:
-
Variable influences on projection
- PCA:
-
Principal component analysis
- OPLS-DA:
-
Orthogonal partial least-squares discriminant analysis
- GCDCA:
-
Glycochenodeoxycholic acid
- PE:
-
Phosphatidylethanolamine
- PC:
-
Phosphatidylcholine
- SM:
-
Sphingomyelin
- KEGG:
-
Kyoto Encyclopedia of Genes and Genomes
- NO:
-
Nitric oxide
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Acknowledgements
This work was supported by grants from the Beijing Talents foundation (2018-12) and Capital Funds for Health Improvement and Research (No. 2018-4-2034) to J.L.; and the Chinese National Natural Science Foundation (No. 81770792) and Key Projects of Science and Technology Planning of Beijing Municipal Education Commission (KZ201810025038) to G.W.
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GW conceived and designed the experiments; JL, JLY, and JWZ performed the experiments; JL, JLY, LZ and QW analyzed and interpreted the patient data; JL and JLY wrote the manuscript; all authors read and approved the final manuscript.
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The study protocol was approved by the Ethics Committee of Beijing Chaoyang Hospital Affiliated with Capital Medical University (application number: 2016-K103).
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Liu, J., Yuan, J., Zhao, J. et al. Serum metabolomic patterns in young patients with ischemic stroke: a case study. Metabolomics 17, 24 (2021). https://doi.org/10.1007/s11306-021-01774-7
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DOI: https://doi.org/10.1007/s11306-021-01774-7