研究茶多酚复方制剂对小鼠免疫功能的影响。方法:茶多酚复方制剂按50、100、150 m g/kg体重连续灌胃15 d,对小鼠淋巴细胞增殖能力、血清溶菌酶活性、血清白细胞介素-4、干扰素-γ含量进行测定,检测茶多酚复方制剂对小鼠免疫功能的影响...研究茶多酚复方制剂对小鼠免疫功能的影响。方法:茶多酚复方制剂按50、100、150 m g/kg体重连续灌胃15 d,对小鼠淋巴细胞增殖能力、血清溶菌酶活性、血清白细胞介素-4、干扰素-γ含量进行测定,检测茶多酚复方制剂对小鼠免疫功能的影响。结果:茶多酚复方制剂在一定剂量可增强小鼠淋巴细胞增殖能力、提高血清溶菌酶活性、增加血清白细胞介素-4和γ-干扰素含量。结论:茶多酚复方制剂具有免疫调节作用。展开更多
Aim To screen for α-glucosidase inhibitor from Glyeyrrhiza uralensis Fisch.. Methods Glycyrrhizic acid, glycyrrhetinic acid, flavonoids of glycyrrhiza, alkaloids of glycyrrhiza, and glycyrrhiza polysaccharides were i...Aim To screen for α-glucosidase inhibitor from Glyeyrrhiza uralensis Fisch.. Methods Glycyrrhizic acid, glycyrrhetinic acid, flavonoids of glycyrrhiza, alkaloids of glycyrrhiza, and glycyrrhiza polysaccharides were isolated from the root of Glycyrrhiza uralensis Fisch. respectively. Three compounds were isolated from the flavonoids of glycyrrhiza as guided by the α-glucosidase inhibitory test in vitro. Moreover, the characteristics of inhibitory kinetics of glycyrol and glycyrrhetinic acid were investi- gated. Results The flavonoids of glycyrrhiza and glycyrrhetinic acid had the strongest α-glucosidase inhibitory activity. Glycyrol,β-sitosterol and liquifitin were isolated and identified. Glycyrol was a fast- binding, reversible, noncompetitive α-glucosidase inhibitor, showing IC50 at 0.26 μg·mL^-1 Glycyrrhetinic acid was a fast-binding, irreversible α-glucosidase inhibitor, showing IC50 at 102.4 μg·mL^-1. Conclusion Glycyrol is an effective α-glucosidase inhibitor.展开更多
文摘研究茶多酚复方制剂对小鼠免疫功能的影响。方法:茶多酚复方制剂按50、100、150 m g/kg体重连续灌胃15 d,对小鼠淋巴细胞增殖能力、血清溶菌酶活性、血清白细胞介素-4、干扰素-γ含量进行测定,检测茶多酚复方制剂对小鼠免疫功能的影响。结果:茶多酚复方制剂在一定剂量可增强小鼠淋巴细胞增殖能力、提高血清溶菌酶活性、增加血清白细胞介素-4和γ-干扰素含量。结论:茶多酚复方制剂具有免疫调节作用。
文摘Aim To screen for α-glucosidase inhibitor from Glyeyrrhiza uralensis Fisch.. Methods Glycyrrhizic acid, glycyrrhetinic acid, flavonoids of glycyrrhiza, alkaloids of glycyrrhiza, and glycyrrhiza polysaccharides were isolated from the root of Glycyrrhiza uralensis Fisch. respectively. Three compounds were isolated from the flavonoids of glycyrrhiza as guided by the α-glucosidase inhibitory test in vitro. Moreover, the characteristics of inhibitory kinetics of glycyrol and glycyrrhetinic acid were investi- gated. Results The flavonoids of glycyrrhiza and glycyrrhetinic acid had the strongest α-glucosidase inhibitory activity. Glycyrol,β-sitosterol and liquifitin were isolated and identified. Glycyrol was a fast- binding, reversible, noncompetitive α-glucosidase inhibitor, showing IC50 at 0.26 μg·mL^-1 Glycyrrhetinic acid was a fast-binding, irreversible α-glucosidase inhibitor, showing IC50 at 102.4 μg·mL^-1. Conclusion Glycyrol is an effective α-glucosidase inhibitor.