Abstract
To evaluate the beneficial effects of Chinese bayberry (Myrica rubra Sieb. et Zucc.) flavonoid extract (CBFE) on chronic alcohol-induced liver oxidative injury in mice, experimental mice were pretreated with different doses of CBFE (50–200 mg/kg) for 4 weeks by gavage feeding. Biochemical markers and enzymatic antioxidants from serum, liver tissue, mitochondria and microsomes were examined. Our results showed that the activities of TC, TG, L-DLC in serum, the activity of CYP2E1 in microsomes, and the levels of MDA in liver tissue and mitochondria, decreased significantly (P < 0.05) in the CBFE-treated group compared with the alcohol group. On the contrary, the activities of ALT, AST, and H-DLC in serum, enzymatic antioxidants GSH-Px, SOD and GST in liver tissue and mitochondria, and HO-1 in microsomes rose markedly (P < 0.05). Histopathological examination revealed that CBFE (200 mg/kg) pretreatment noticeably prevented alcohol-induced hepatocyte apoptosis and fatty degeneration. It was suggested that the hepatoprotective effects exhibited by CBFE on alcohol-induced liver oxidative injury may be due to its potent antioxidant properties.
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Abbreviations
- ADH:
-
Alcohol dehydrogenase
- ALD:
-
Alcoholic liver diseases
- ALT:
-
Alanine aminotransferase
- AST:
-
Aspartate transaminase
- CBFE:
-
Chinese bayberry flavonoid extract
- CYP2E1:
-
Cytochrome P450 2E1
- GSH-Px:
-
Glutathione peroxidase
- GST:
-
Glutathione S-transferase
- H-DLC:
-
High density lipoprotein cholesterol
- HO-1:
-
Heme oxygenase-1
- L-DLC:
-
Low density lipoprotein cholesterol
- LPO:
-
Lipid peroxidation
- MDA:
-
Malondialdehyde
- RNS:
-
Reactive nitrogen species
- ROS:
-
Reactive oxygen species
- SOD:
-
Superoxide dismutase
- TC:
-
Total cholesterol
- TG:
-
Triglyceride
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Acknowledgments
The project was supported by Zhejiang Provincial Natural Science Foundation of China (Grant No. Y3110213) and the planning subject of ‘the twelfth five-year-plan’ in National Science and Technology for the Rural Development in China (Grant No. 2011BAD23B02).
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We declare that we have no conflict of interest.
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11418_2014_829_MOESM2_ESM.tif
Supplemental Fig. S2 Structures of flavonoids identified from CBFE: (1) myricetin; (2) kaempferol-3-O-glucoside/galactoside; (3) myricetin-3-O-glucoside/galactoside; (4) myricetin-3-O-rhamnoside; (5) quercetin-3-O-rhamnoside. (TIFF 12 kb)
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Liu, H., Qi, X., Cao, S. et al. Protective effect of flavonoid extract from Chinese bayberry (Myrica rubra Sieb. et Zucc.) fruit on alcoholic liver oxidative injury in mice. J Nat Med 68, 521–529 (2014). https://doi.org/10.1007/s11418-014-0829-9
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DOI: https://doi.org/10.1007/s11418-014-0829-9