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鬼针草化学成分的研究(Ⅰ) 总被引:4,自引:1,他引:4
目的 研究鬼针草Bidens bipinnata地上部分的化学成分。方法 采用硅胶、ODS柱色谱并结合HPLC分离纯化,通过理化鉴定和波谱分析鉴定其化学结构。结果 从鬼针草的醋酸乙酯部位得到水杨酸(I)、9,12,13-三羟基-10,15-十八碳二烯酸(Ⅱ)9,12,13-三羟基-10-十八烯酸(Ⅲ)、苄基-O-β-D-吡喃葡萄糖苷(Ⅳ)、苯乙基-O-β-D-吡哺葡萄糖苷(V)、(Z)-3-己烯基-O-β-吡喃葡萄糖苷(Ⅵ)、丁香酚苷(Ⅶ)、3-甲基-2-(2-戊烯基)-4-O-β-D-吡喃葡萄糖基-△^2-环戊烯酮(Ⅶ)。结论 以上8个化合物中除水杨酸外,其余7个化合物均为首次从鬼针草中分离得到。 相似文献
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目的建立鬼针草植物的HPLC指纹图谱,为鬼针草药材的品种鉴定质量控制提供依据。方法采用迪马Diamonsil 5U(C18,250×4.6mm)色谱柱,以乙腈-0.2%磷酸水溶液为流动相进行梯度洗脱,流速为1.0m L·min-1,检测波长为360nm,柱温为25℃:进样量为20μL。结果建立了10批鬼针草的HPLC指纹图谱,确立了17个共有峰,多数峰可以达到较好分离。并对种间相似度进行了比较。结论该方法稳定性、重复性好,建立的指纹图谱可为鬼针草药材的质量评价提供依据。 相似文献
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鬼针草是我国的传统中药材,现代药学研究发现有抗炎、抗氧化、抗纤维化等药理活性,临床用于肝炎、风湿等疾病。黄酮类是其主要活性部位,从鬼针草中提取的鬼针草总黄酮(TFB)具有良好的临床应用前景。近年来其中一些成分在体内的药代动力学研究资料不断丰富,为了进一步明确鬼针草中黄酮类成分在体内的吸收、分布、代谢、排泄过程,该文就近年来鬼针草中含有的黄酮类化学成分的药代动力学研究进展进行综述,为相关研究提供参考。 相似文献
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Qing-Hui Yang Jun Yang Guo-Ze Liu Lei Wang Tie-Chui Zhu Hai-Li Gao Xiao-Ge Kou 《African journal of traditional, complementary, and alternative medicines》2013,10(3):543-549
We studied the in vitro anti-tumor activity of Bidens Bipinnata L. extract. MTT assay was used to investigate the inhibitory effect of different concentrations of the extracts on human hepatocellular carcinoma (HepG2) cell lines and human cervical carcinoma (Hela) cell lines, and the IC50 values were calculated. The Bidens Bipinnata L. extract had different degrees of inhibitory effects on these two cells, and when exposure time was 48 h, the inhibition rate reached its peak, with IC50 values of 14.80 µg/mL and 13.50 µg/mL respectively. The Bidens Bipinnata L. extract had a good inhibitory effect on human HepG2 cell lines and Hela cell lines, and thus has certain development prospects. 相似文献
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摘要:目的 探讨鬼针草总黄酮(TFB)对局灶性脑缺血大鼠认知功能的影响及可能的作用机制。方法 72只大 鼠随机分为假手术组、模型组、阳性对照组(1 mg/kg尼莫地平)、低剂量TFB组(25 mg/kg)、中剂量TFB组(50 mg/kg)、 高剂量TFB组(100 mg/kg),每组12只。采用改良线栓法建立局灶性脑缺血大鼠模型。Morris水迷宫实验检测大鼠 学习和记忆能力,尼氏染色观察大鼠海马组织病理结构变化,酶联免疫吸附法检测海马组织脑源性神经营养因子 (BDNF)、神经生长因子(NGF)、白介素-1β(IL-1β)、白介素-6(IL-6)和肿瘤坏死因子-α(TNF-α)含量,Western blot 检测海马组织细胞外信号调节蛋白激酶(ERK)1/2、p-ERK1/2、核转录因子(NF)-κB p65和p-NF-κB p65蛋白表达。 结果 与假手术组比,模型组大鼠逃避潜伏期延长,穿越平台次数减少,海马组织BDNF和NGF含量均降低,IL-1β、 IL-6和TNF-α含量以及p-ERK1/2和p-NF-κB p65蛋白表达水平均升高(P<0.05)。与模型组比,第2天之后高剂量 TFB组和阳性对照组大鼠平均逃避潜伏期均降低(P<0.05),中、高剂量TFB组和阳性对照组大鼠穿越平台次数增 加,海马组织BDNF和NGF含量升高(P<0.05),IL-1β、IL-6和TNF-α含量以及p-ERK1/2和p-NF-κB p65蛋白表达 水平均降低,具有剂量依赖性(P<0.05)。阳性对照组和高剂量TFB组大鼠各检测指标比较差异无统计学意义(P> 0.05)。结论 TFB可改善局灶性脑缺血大鼠的认知功能,其作用机制可能与抑制ERK1/2/NF-κB信号通路的传导 有关。 相似文献
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Andrade-Neto VF Brandão MG Oliveira FQ Casali VW Njaine B Zalis MG Oliveira LA Krettli AU 《Phytotherapy research : PTR》2004,18(8):634-639
Bidens pilosa (Asteraceae), a medicinal plant used worldwide, has antimalarial activity as shown in previous work. This study tested ethanol extracts from wild plants collected in three different regions of Brazil and from plants cultivated in various soil conditions. The extracts were active in mice infected with P. berghei: doses of < or =500 mg/kg administered by oral route reduced malaria parasitaemia and mouse mortality; higher doses were found to be less effective. Tested in vitro against three P. falciparum isolates, two chloroquine resistant and one mefloquine resistant, the plants cultivated under standard conditions, and in humus enriched soil, were active; but the wild plants were the most active. Analysis using thin layer chromatography demonstrated the presence of flavonoids (compounds considered responsible for the antimalarial activity) in all plants tested, even though at different profiles. Because B. pilosa is proven to be active against P. falciparum drug-resistant parasites in vitro, and in rodent malaria in vivo, it is a good candidate for pre-clinical tests as a phytotherapeutic agent or for chemical isolation of the active compounds with the aim of finding new antimalarial drugs. 相似文献