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선발된 약초 추출물의 알레르기성 염증에 대한 저해효과 비교
Comparative Study of the Inhibitory Effects on Allergic Inflammation by Selected Medicinal Herb Extracts
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/326667
Background : Five medicinal herbs have been selected from the preliminary screening for in vitro anti-allergy activity (in RBL-2H3 cells). The present study is conducted to investigate the inhibitory effects of the medicinal herbs on allergic inflammation in other kind of cells. Methods and Results : Cells treated with five extracts prepared from Betula costata Trautv. (aerial part), Camellia sinensis L. (aerial part), Polygonatum stenophyllum Maxim. (root), Pyrus pyrifolia var. culta (Makino) Nakai (leaf), and Rehmannia glutinosa (Gaertn.) Libosch. ex Steud. (root) were measured for mRNA levels of TNF-α on HaCaT keratinocytes stimulated by TNF-α /INF-γ and for mRNA levels of IL-2 in Jurkat T cells mediated by PMA/A23187. Pre-treatment with the five extracts reduced the mRNA levels of TNF-α in HaCaT cells and mRNA levels of IL-2 in Jurkat T cells. In particular, the leaf extract of Pyrus pyrifolia var. culta (Makino) Nakai significantly and dose-dependently decreased the mRNA levels of TNF-α and IL-2. To determine the toxicity of the extracts from the selected medicinal herbs to HaCaT cells and Jurkat T cells, the viabilities of the cells treated with several concentrations of the five extracts were measured by MTT assay. Extracts of Polygonatum stenophyllum Maxim. (root), Pyrus pyrifolia var. culta (Makino) Nakai (leaf), and Rehmannia glutinosa (Gaertn.) Libosch. ex Steud. (root) (up to 250 ㎍/㎖) did not show cytotoxic effects on HaCaT cells and Jurkat T cells. On the other hand, 250 ㎍/㎖ of extracts of Betula costata Trautv. (aerial part) and Camellia sinensis L. (aerial part) reduced cell viability in both cells. Conclusion : These results demonstrate that the leaf extract of Pyrus pyrifolia var. culta (Makino) Nakai has an anti-inflammatory effect by inhibiting pro-inflammatory cytokine expression. Therefore, the leaf of Pyrus pyrifolia var. culta (Makino) Nakai can be a useful resource for the development of anti-allergy/anti-inflammatory materials.
