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Cimicifugae Rhizoma, a herb with a long history of use in traditional Oriental medicine is reported to have anti-inflammatory, antioxidant, anti-complement and anticancer effects. The aim of the present study was to evaluate the effects of Cimicifugae Rhizoma extracts on the osteogenic and adipogenic differentiation of human stem cells derived from gingiva. Stem cells derived from gingiva were grown in the presence of Cimicifugae Rhizoma at final concentrations of 0.1, 1 and 10 µg/ml. Cell proliferation analyses were performed at day 15. For osteogenic differentiation experiments, the stem cells were cultured in osteogenic media containing β-glycerophosphate, ascorbic acid-2-phosphate and dexamethasone, and osteogenic differentiation was evaluated by analysis of osteocalcin expression at 21 days. For adipogenic differentiation experiments, the stem cells were grown in adipogenic induction medium, and the adipogenic differentiation was evaluated by analysis of adipocyte fatty acid-binding protein at day 14. The cultures grown in the presence of 0.1 µg/ml Cimicifugae Rhizoma showed a significant increase in cellular proliferation at day 15 compared with the control group. The relative osteogenic differentiation in the presence of Cimicifugae Rhizoma for the 0.1, 1 and 10 µg/ml groups was 171.5±13.7, 125.6±28.7 and 150.5±9.0, respectively, when that of the untreated control group on day 21 was considered to be 100%. The relative adipogenic differentiation at day 14 of the 0.1, 1 and 10 µg/ml groups in the presence of Cimicifugae Rhizoma was 97.5±15.0, 102.9±12.8 and 87.0±6.8%, respectively when that of the untreated control group on day 14 was considered to be 100%. Within the limits of this study, Cimicifugae Rhizoma increased the proliferation of stem cells derived from the gingiva, and low concentrations of Cimicifugae Rhizoma may increase the osteogenic differentiation of stem cells.

Effects of Cimicifugae Rhizoma on the osteogenic and adipogenic differentiation of stem cells