• Journal of Life Science
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• v.23 no.5
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• pp.643-649
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• 2013

In this study, we examined the antioxidative activities of ethanol extracts obtained from three plants; Lithospermum erythrorhizon Siebold & Zucc., Xanthium strumarium Linn, and Lonicera japonica, which have traditionally been used as drugs in Eastern medicine in Korea. Their extraction yields were 7.01%, 2.92%, and 7.95% in Lithospermum erythrorhizon Siebold & Zucc., Xanthium strumarium L, and Lonicera japonica, respectively. The contents of the phenolic compounds were $4.3{\pm}0.1{\mu}g/ml$, $5.4{\pm}0.1{\mu}g/ml$, and $4.6{\pm}0.1{\mu}g/ml$ in Lithospermum erythrorhizon Siebold & Zucc., and Xanthium strumarium L, respectively. Furthermore, the radical scavenging activity measured through the DPPH assay appeared highest in the Lonicera japonica's extract, and its $EC_{50}$ was 0.24 mg/ml. Compared to the control, the xanthine oxidase inhibiting activities of all extracts were effective at 0.01 mg/ml concentration. Superoxide radical scavenging activity in Lithospermum erythrorhizon Siebold & Zucc. and Lonicera japonica was more than 80%, with a concentration of 50 mg/ml. OH radical scavenging activity was 40% in the three plants, with a concentration of 50 mg/ml scavenging activity. From our results, we demonstrated that the ethanol extracts of three medicinal plants have antioxidant activities and could be potential candidates for natural antioxidants.

• 한국약용작물학회:학술대회논문집
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• 2011.09a
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• pp.176-177
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• 2011

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2009.04a
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• pp.90-92
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• 2009

• 한국약용작물학회:학술대회논문집
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• 2012.05a
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• pp.370-371
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• 2012

• Journal of Life Science
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• v.28 no.9
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• pp.1022-1029
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• 2018

This study was carried out to search for the anti-inflammatory activities of ethanol extracts obtained from 5 kinds of oriental medical plant; Pleuropterus multiflorus extract (PME), Acorus calamus L. extract (ACE), Lithospermum erythrorhizon Siebold & Zucc. extract (LEE), Xanthium strumarium L. extract (XSE), Lonicera japonica extract (LJE), which have traditionally been used as a drug in oriental medical plants in Korea. XSE showed cytotoxicity at 100, $200{\mu}g/ml$ concentration in RAW264.7 cells (p<0.05) and ACE showed cytotoxicity at $200{\mu}g/ml$ concentration in RAW264.7 cells (p<0.05). But other oriental medical plants did not showed cytotoxicity was observed in RAW264.7 cells below $200{\mu}g/ml$ concentration. These extracts at non-toxic concentrations showed anti-inflammatory effects. PME, ACE, XSE and LJE showed a concentration-dependent inhibitory effect on NO production and $PGE_2$ production in LPS-induced RAW264.7 cells. In particular, XSE showed the highest NO production inhibition ($52.9{\mu}g/ml$, $IC_{50}$) as well as the highest $PGE_2$ production inhibition at $50{\mu}g/ml$ (73.6%). ACE and LEE showed cell proliferation effects on HaCaT keratinocyte cells. Especially, LEE showed 21.1, 53.5 and 99.6% proliferative activity by incubation for 1, 3, 5days at $100{\mu}g/ml$ concentration. ACE also showed 11.2, 26.0% proliferative activity for 1day and 3days at $10{\mu}g/ml$ concentration. As a result of this study, ethanol extracts obtained from 5 kinds of oriental medical plant showed anti-inflammatory activity and HaCaT cell regeneration effect.