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자료유형
학술저널
저자정보
저널정보
한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제16권 제11호
발행연도
2006.1
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1,791 - 1,798 (8page)

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When ginsenoside Rg5, a main component isolatedfrom red ginseng, was incubated with three human fecalmicroflora for 24 h, all specimens showed hydrolyzing activity:all specimens produced ginsenoside Rh3 as a main metabolite,but a minor metabolite 3β,12β-dihydroxydamar-21(22),24-diene (DD) was observed in two specimens. To evaluate theantiallergic effect of ginsenoside Rg5 and its metabolites, theinhibitory effect of ginsenoside Rg5 and its metabolite ginsenosidecutaneous anaphylaxis (PCA) reaction induced by the IgE-antigen complex, and mouse ear skin dermatitis induced by12-O-tetradecanoilphorbol-13-acetate (TPA) were measured.Ginsenosides Rg5 and Rh3 potently inhibited degranulationof RBL-2H3 cels. These ginsenosides also inhibited mRNAexpresion of proinflamatory cytokines IL-6 and TNF-α in RBL-2H3 cells stimulated by IgE-antigen. Orally and intraperitoneallyadministered ginsenoside Rg3 and orally administered ginsenosideIgE-antigen complex. However, intraperitoneally administeredginsenoside Rg5 nearly did not inhibit the PCA reaction. Theseginsenosides not only suppressed the swelling of mouse earsinduced by TPA, but also inhibited mRNA expresion ofcyclooxygenase-2, TNF-α, and IL-4 and activation of transcriptionfactor NF-κB. These inhibitions of ginsenoside Rh3 were morepotent than those of ginsenoside Rg5. These findings suggest thatginsenoside Rg5 may be metabolized in vivo to ginsenoside Rh3antiallergic diseases, such as rhinitis and dermatitis.

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