AIM: To set up an assay method for the determination of ecdysterone (EDS) in the root of Achyranthes bidentata Bl. by RP HPLC. METHODS: The EDS was separated on a Hypersil ODS column (200 mm×4 6 mm ID, 5 μm), us...AIM: To set up an assay method for the determination of ecdysterone (EDS) in the root of Achyranthes bidentata Bl. by RP HPLC. METHODS: The EDS was separated on a Hypersil ODS column (200 mm×4 6 mm ID, 5 μm), using acetonitrile — water (1 0∶5 4) as the mobile phase and detected at 243 nm. The flow rate was 1 0 mL·min -1 . Phenol was used as an internal standard. RESULTS: The calibration curve was in good linearity over the range of 28 04~280 40 μg (γ=0 9997). The average recovery was 95 2%. CONCLUSION: The method is simple, fast, sensitive and is suitable for quantitative analysis of EDS in the root of Achyranthes bidentata Bl.展开更多
AIM To study the activity of ecdysterone from Achyranthes bidentata Bl. (AB) promoting proliferation of osteoblast like (OB like) UMR106 cells and to determine its content in AB by HPLC method. METHODS Ecdysterone iso...AIM To study the activity of ecdysterone from Achyranthes bidentata Bl. (AB) promoting proliferation of osteoblast like (OB like) UMR106 cells and to determine its content in AB by HPLC method. METHODS Ecdysterone isolated from AB was cultured with OB like cells UMR106 together in vitro and the proliferation of OB like cells was determined by MTT assay. The chromatographic conditions for determining ecdysterone included an ODS column (250 mm×4 6 mm, 5 μm), a mobile phase consisting of a mixture of water acetontrile tetrahydrofuran (86∶11∶3), detection wavelength of 243 nm, and column temperature of 27℃. Phenacetin was used as the internal standard. RESULTS The ecdysterone from AB had significant activity promoting proliferation of OB like cells, the proliferation was promoted by 41% ( n =3). The average recovery of ecdysterone was 96 2% (RSD=2 1%), the calibration was linear in the range of 30~300 μg·mL -1 (γ=0 9998). CONCLUSION Ecdysterone was screened quickly by cultivating with OB like cells together in vitro . The HPLC method is accurate, fast and reproducible for the determination of ecdysterone in AB.展开更多
目的研究中药牛膝中的三萜皂苷类成分。方法采用大孔树脂、硅胶、ODS柱色谱分离纯化 ,经理化常数、光谱学方法鉴定结构。结果分离得到了 6个化合物 ,鉴定了其中的两个 ,结构分别为 3 O [2′ O β D 吡喃葡萄糖基 3′ O (2″ 羟基 1″ ...目的研究中药牛膝中的三萜皂苷类成分。方法采用大孔树脂、硅胶、ODS柱色谱分离纯化 ,经理化常数、光谱学方法鉴定结构。结果分离得到了 6个化合物 ,鉴定了其中的两个 ,结构分别为 3 O [2′ O β D 吡喃葡萄糖基 3′ O (2″ 羟基 1″ 羧乙氧基羧丙基 ) ] β D 葡萄糖醛酸基齐墩果酸 2 8 O β D 吡喃葡萄糖苷 (牛膝皂苷Ⅰ )和齐墩果酸 3 O [3′ O (2″ 羟基 1″ 羧乙氧基羧丙基 ) ] β D 葡萄糖醛酸苷 (牛膝皂苷Ⅱ )。结论牛膝皂苷Ⅰ和Ⅱ均为首次从牛膝中得到。展开更多
目的观察中药牛膝提取物神经再生素(NRF)对小鼠损伤坐骨神经的修复作用。方法ICR小鼠50只,雌雄各半,行坐骨神经夹伤术,随机分成5组:NRF高、中、低剂量组,弥可保组(阳性对照),生理盐水组(空白对照)。术后每日腹腔注射给药。采用小鼠坐骨...目的观察中药牛膝提取物神经再生素(NRF)对小鼠损伤坐骨神经的修复作用。方法ICR小鼠50只,雌雄各半,行坐骨神经夹伤术,随机分成5组:NRF高、中、低剂量组,弥可保组(阳性对照),生理盐水组(空白对照)。术后每日腹腔注射给药。采用小鼠坐骨神经功能指数(sc iatic function index,SFI)、组织形态学及电镜检查,观察NRF对损伤坐骨神经的影响。结果与空白对照组相比,NRF可显著改善小鼠的坐骨神经功能。超微结构观察表明,实验组有髓神经纤维的髓鞘形态、厚度、成熟度均优于对照组,而变性纤维的数目少于对照组。结论NRF能促进小鼠坐骨神经损伤后的修复及其功能的恢复。展开更多
文摘AIM: To set up an assay method for the determination of ecdysterone (EDS) in the root of Achyranthes bidentata Bl. by RP HPLC. METHODS: The EDS was separated on a Hypersil ODS column (200 mm×4 6 mm ID, 5 μm), using acetonitrile — water (1 0∶5 4) as the mobile phase and detected at 243 nm. The flow rate was 1 0 mL·min -1 . Phenol was used as an internal standard. RESULTS: The calibration curve was in good linearity over the range of 28 04~280 40 μg (γ=0 9997). The average recovery was 95 2%. CONCLUSION: The method is simple, fast, sensitive and is suitable for quantitative analysis of EDS in the root of Achyranthes bidentata Bl.
文摘AIM To study the activity of ecdysterone from Achyranthes bidentata Bl. (AB) promoting proliferation of osteoblast like (OB like) UMR106 cells and to determine its content in AB by HPLC method. METHODS Ecdysterone isolated from AB was cultured with OB like cells UMR106 together in vitro and the proliferation of OB like cells was determined by MTT assay. The chromatographic conditions for determining ecdysterone included an ODS column (250 mm×4 6 mm, 5 μm), a mobile phase consisting of a mixture of water acetontrile tetrahydrofuran (86∶11∶3), detection wavelength of 243 nm, and column temperature of 27℃. Phenacetin was used as the internal standard. RESULTS The ecdysterone from AB had significant activity promoting proliferation of OB like cells, the proliferation was promoted by 41% ( n =3). The average recovery of ecdysterone was 96 2% (RSD=2 1%), the calibration was linear in the range of 30~300 μg·mL -1 (γ=0 9998). CONCLUSION Ecdysterone was screened quickly by cultivating with OB like cells together in vitro . The HPLC method is accurate, fast and reproducible for the determination of ecdysterone in AB.
文摘目的研究中药牛膝中的三萜皂苷类成分。方法采用大孔树脂、硅胶、ODS柱色谱分离纯化 ,经理化常数、光谱学方法鉴定结构。结果分离得到了 6个化合物 ,鉴定了其中的两个 ,结构分别为 3 O [2′ O β D 吡喃葡萄糖基 3′ O (2″ 羟基 1″ 羧乙氧基羧丙基 ) ] β D 葡萄糖醛酸基齐墩果酸 2 8 O β D 吡喃葡萄糖苷 (牛膝皂苷Ⅰ )和齐墩果酸 3 O [3′ O (2″ 羟基 1″ 羧乙氧基羧丙基 ) ] β D 葡萄糖醛酸苷 (牛膝皂苷Ⅱ )。结论牛膝皂苷Ⅰ和Ⅱ均为首次从牛膝中得到。
文摘目的观察中药牛膝提取物神经再生素(NRF)对小鼠损伤坐骨神经的修复作用。方法ICR小鼠50只,雌雄各半,行坐骨神经夹伤术,随机分成5组:NRF高、中、低剂量组,弥可保组(阳性对照),生理盐水组(空白对照)。术后每日腹腔注射给药。采用小鼠坐骨神经功能指数(sc iatic function index,SFI)、组织形态学及电镜检查,观察NRF对损伤坐骨神经的影响。结果与空白对照组相比,NRF可显著改善小鼠的坐骨神经功能。超微结构观察表明,实验组有髓神经纤维的髓鞘形态、厚度、成熟度均优于对照组,而变性纤维的数目少于对照组。结论NRF能促进小鼠坐骨神经损伤后的修复及其功能的恢复。