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KMID : 1004820120130040331
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Journal of Biomedical Research
2012 Volume.13 No. 4 p.331 ~ p.338
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Anti-oxidant and anti-inflammatory effects of Fraxinus rhynchophylla on lipopolysaccharide (LPS)-induced murine Raw 264.7 cells
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Hong Gyeong-Eun
Park Hyeon-Soo
Kim Jin-A
Nagappan Arulkumar
Zhang Jue
Kang Sang-Rim
Won Chung-Kil
Cho Jae-Hyeon
Kim Eun-Hee
Kim Gon-Sup
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Abstract
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Fraxinus rhynchophylla (Oleaceae), a deciduous tree, is known to have properties that include anti-inflammatory, convergence, febricide, antiblenophthalmia, antidiarrhea, antileukorrhea, and so forth. In addition, it has been used for traditional herbal medicine in East Asian countries, including Korea. In this study, we investigated the antioxidant and anti-inflammatory effects of Fraxinus rhynchophylla ethanol extract (FRE) in lipopolysaccharide (LPS)-induced murine macrophage Raw 264.7 cells with FRE pretreatment. We performed DPPH-assay, Western blot, and Reverse Transcription-Polymerase Chain Reaction (RT-PCR). FRE showed 85% free radical scavenging activity at concentrations of 80 μg/ml. Results of this study also showed that FRE down-regulates Cox-2 and iNOS expression in mRNA and protein level. In conclusion, crude ethanol extract of Fraxinus rhynchophylla exhibited antioxidant and anti-inflammatory activities, and it may potentially provide a valuable source of natural herbal agent to inhibit inflammation.
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KEYWORD
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Fraxinus rhynchophylla, antioxidant, anti-inflammatory, Raw 264.7 cell
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