Comparative Study of the Anti-inflammatory Effects of Menthae Herba from Korea and China
2012
Lim, H.S., Korea Institute of Oriental Medicine, Daejeon, Republic of Korea | Kim, J.H., Korea Institute of Oriental Medicine, Daejeon, Republic of Korea | Ha, H.K., Korea Institute of Oriental Medicine, Daejeon, Republic of Korea | Seo, C.S., Korea Institute of Oriental Medicine, Daejeon, Republic of Korea | Shin, H.K., Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
Menthae herba (MH) extracts exhibit anti-inflammatory effects. The purpose of this study was to determine whether the anti-inflammatory effects of MH extracts vary according to the cultivation regions. We performed a comparative analysis of MH extracts by evaluating the production of inflammatory mediators in RAW 264.7 murine macrophage cells and HaCaT human keratinocyte cells. MH extracts obtained from different cultivation regions in Korea and China significantly reduced the production of nitric oxide (NO), prostaglandin E₂ (PGE₂), and tumor necrosis factor-α (TNF-α) in RAW 264.7 cells stimulated with lipopolysaccharide (LPS). No differences in these inhibitory activities were observed between MH extracts. In HaCaT cells stimulated with TNF-α and interferon-γ (IFN-γ), MH extracts did not inhibit the production of macrophage-derived chemokine (MDC/CCL22), but most extracts reduced the production of the regulated on activation normal T-cell expression and secreted (RANTES/CCL5). We used clustering tree analysis of the MH extracts according to the chromatographic pattern and anti-inflammatory potency of MH extracts. We observed differences in the chromatographic pattern of MH extracts but no difference in anti-inflammatory potency. Our findings suggest that MH extracts from different regions do not show any differences in their pharmacological potency in that MH extracts are used as therapeutic agents to treat inflammatory disorders.
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