Abstract
Metabolic differences of experimental animals contribute to pharmacological variations. Sprague–Dawley (SD) and Wistar rats are commonly used experimental rats with similar genetic background, and considered interchangeable in practical researches. In this study, we present the urinary metabolomics results, based on gas chromatography coupled to mass spectrometry (GC/MS), which reveal the systematic metabolic differences between SD and Wistar rats under different perturbations such as fasting, feeding, and consecutive acute ethanol interventions. The different metabotypes between the two strains of rats involve a number of metabolic pathways and symbiotic gut microflora. SD rats exhibited higher individualized metabolic variations in the fasting and feeding states, and a stronger ability to recover from an altered metabolic profile with less hepatic injury from the consecutive ethanol exposure, as compared to Wistar rats. In summary, the GC/MS-based urinary metabolomics studies demonstrated an intrinsic metabolic difference between SD and Wistar rats, which warrants consideration in experimental design using these animal strains.
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Abbreviations
- ALT:
-
Alanine aminotransferase
- AST:
-
Aspartate aminotransferase
- GC/MS:
-
Gas chromatography coupled to mass spectrometry
- GSH-PX:
-
Glutathione peroxidase
- IS:
-
Internal standard
- LDH:
-
Lactate dehydrogenase
- LPO:
-
Lipid peroxidation
- NMR:
-
Nuclear magnetic resonance
- OPLS–DA:
-
Orthogonal projections to latent structures discriminant analysis
- PCA:
-
Principal component analysis
- SD rats:
-
Sprague–Dawley rats
- SOD:
-
Superoxide dismutase
- UV:
-
Unite variance
- VIP:
-
Variable influence on projection
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Acknowledgments
This work was financially supported by the projects of Shanghai Commission of Science and Technology (07DZ19715), and National comprehensive technology platforms for innovative drug R&D (2009ZX09301-007) and E-institutes of Shanghai Municipal Education Comminssion, Project Number: E03008, 09YZ119.
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Gao, X., Zhao, A., Zhou, M. et al. GC/MS-based urinary metabolomics reveals systematic differences in metabolism and ethanol response between Sprague–Dawley and Wistar rats. Metabolomics 7, 363–374 (2011). https://doi.org/10.1007/s11306-010-0252-5
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DOI: https://doi.org/10.1007/s11306-010-0252-5