草质素苷 TN1011

Product Introduction
Bioactivity


英文名: Rhodionin

描述: Rhodionin 是从红景天的根中分离的特异性非竞争性细胞色素 P450 2D6 抑制剂，IC50=0.761 μM，Ki=0.769 μM。它有 DPPH 自由基清除活性，IC50为 19.49 μM。它抑制乙酰胆碱酯酶，IC50范围为 57.50 至 2.43 μg/mL。

体外活性: Quantification of these compounds was performed by high-performance liquid chromatography (HPLC). To investigate the antioxidant and anti-inflammatory effects of the compounds, DPPH radical scavenging, NBT superoxide scavenging and nitric oxide production inhibitory activities were examined in LPS-stimulated Raw 264.7 cells. We suggest that the major active components of RRS are herbacetin glycosides, exhibiting antioxidant activity, and kaempferol, exhibiting anti-inflammatory activity.In this study, 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging activity and nitrotetrazolium blue chloride (NBT) superoxide scavenging activity were measured to assess the antioxidant activity of the components from RRS. DPPH has the ability to easily accept hydrogen atoms because it contains an unstable element, the hydrazyl nitrogen, therefore, antioxidant activity can be measured because DPPH loses its violet color when it receives hydrogens from antioxidants. Additionally, NBT has the ability to easily receive superoxide because it contains unstable anions. Therefore, antioxidant activity may be measured when NBT loses its yellow color upon reaction with abundant superoxide. Among the compounds from RRS, 7(Rhodionin) and 8 exhibited the most potent DPPH free radical scavenging activities, with IC50 values of 19.49 ± 0.21 and 27.77 ± 0.61 μM, respectively, compared to the positive control, L-ascorbic acid (IC50 = 32.89 ± 0.70 μM). The other compounds did not exhibit activities in this assay up to 100 μM (Table 2).

存储条件: Powder: -20°C for 3 years | In solvent: -80°C for 1 year

溶解度: DMSO : 50 mg/mL (111.51 mM)


关键字: Inhibitor | inhibit | Cholinesterase (ChE) | Rhodionin

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