Comparative Study of Anti-oxidative Effects of Tibetan Folk Medicine Erigeron multiradiatus during Plant Growth
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摘要:
Abstract:
Objective To explore the effects of a potential anti-oxidative plant, Erigeron multiradiatus (Asteraceae), plant materials from naturally distributed high-altitude populations at different stages of life cycle were collected. Methods Fifteen extracts obtained from the Ganzi region (Sichuan, China) were studied to assess their radical- scavenging ability on 1,1-diphenyl-2-picrylhydrazyl radicals and reducing power ability. Moreover, considering that anti-oxidants and free radical scavengers can also exert protective effect on endothelial cells from oxidative injury, these extracts were also evaluated for their anti-oxidative activity against cellular injury in the cultured human endothelial cell line (ECV304) induced by hydrogen peroxide (H2O2). Results All the extracts had radical-scavenging and/or reducing power ability, and the most active extract was found during flowering whereas the lowest appeared during vegetative growth period. The accumulation of anti-oxidative compounds was found to be affected by the altitude of growth environment. Total flavonoid content assay was also performed to support this outcome. Furthermore, these extracts also exhibited different effects on attenuating H2O2-induced cytotoxicity and inhibiting lipid peroxidation and LDH leakage from endothelial cells. Conclusion E. multiradiatus may be an important natural anti-oxidant and this property may contribute to verifying the utilization of this plant in Tibet folk medicine.
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Applied Fundamental Research Scheme of the Bureau of Science and Technology of Sichuan Province, China (2009JY0017); the Fundamental Research Funds for the Central Universities, Southwest University for Nationalities (09NZYZJ01)
ZHANG Zhi-feng, LIU Yuan, LUO Pei, ZHANG Hao. Comparative Study of Anti-oxidative Effects of Tibetan Folk Medicine Erigeron multiradiatus during Plant Growth[J]. Chinese Herbal Medicines (CHM),2011,3(3):207-213
