共查询到19条相似文献,搜索用时 519 毫秒
1.
2.
3.
4.
5.
凤尾蕨(Pteris)属植物为传统药材,迄今为止已发现300余种该属植物,我国约有66种,有24种可入药。据《岭南采药录》记载,多数凤尾蕨属植物具有消肿、解毒、止痢等功效,民间常将该属植物用于治疗腹泻、肠炎、肺咳血、外伤出血、咽喉肿痛、痢疾、肾炎、风湿等疾病。凤尾蕨属植物化学成分多样,主要有黄酮、二萜、倍半萜、挥发油、多糖等类型的化合物。该属部分植物提取物具有抗氧化、抗菌、抗炎、抗病毒、抗肿瘤等生物活性,特别对萜类成分的体外抗肿瘤、抗菌、抗炎等作用研究较为透彻。进一步开发利用凤尾蕨属植物资源,特别是利用该属植物中具有高生物活性的萜类化合物,该文通过查阅1973年以来有关凤尾蕨属植物的研究文献,总结和阐述国内外凤尾蕨属植物中萜类成分的化学结构、生理活性以及作用机制的研究进展,并对凤尾蕨属植物的开发利用及其在预防、治疗癌症等方面的应用前景进行了展望,以期为凤尾蕨属植物中萜类成分的深入研究和开发利用提供理论参考。 相似文献
6.
南五味子属植物化学成分及其活性研究进展 总被引:20,自引:2,他引:20
对近20年来国内外南五味子属植物化学成分及其生物活性研究现状进行综述。南五味子属植物主要含有木脂素类和三萜类成分 ,其中许多为该属植物特有成分 ,这些化学成分具有抗氧化、抗HIV病毒、拮抗血小板活化因子等活性。 相似文献
7.
柽柳属药用植物研究进展 总被引:11,自引:0,他引:11
柽柳属植物的化学成分主要为多酚类成分和萜类成分,具有保肝、抗炎、抗微生物、解热镇痛、抗氧化等生物活性.综述了柽柳属植物的化学成分、药理作用和临床应用,并对其开发前景进行了展望,以期为该属植物的深入研究和开发利用提供参考 相似文献
8.
9.
目的 千金藤属植物具有良好药用价值,许多研究表明其含有丰富的生物碱成分,但对该属植物其他成分的研究很少.对千金藤属植物非生物碱成分的组成和活性的研究,有利于更加深入地了解该属植物的药效和药理作用.方法 从防己科千金藤属植物地不容Stephania epigeae H .S .Lo及云南地不容Stephania yunnanensis H.S.Lo中,采用苯酚硫酸测定法、铜试剂沉淀测定法分别测定地不容和云南地不容中的总多糖和葡聚糖的含量.结果 地不容和云南地不容中分别含有25.14%,13.66%的总多糖及1.00%,0.71%的葡聚糖.结论 苯酚硫酸法和铜试剂沉淀法联合使用,为该植物多糖的分离纯化及多糖成分的结构、活性研究提供可行手段.千金藤属植物的葡聚糖具有免疫促进作用,提示可对地不容的多糖成分做活性筛选研究.千金藤属植物的药用价值较高,目前对地不容的生物碱成分研究比较透彻,但对其非生物碱成分研究仍处于空白,此项研究将有助于推动其药用价值的开发. 相似文献
10.
11.
吸附树脂纯化远志总皂苷的研究 总被引:1,自引:0,他引:1
目的:分析不同吸附树脂对远志总皂苷的纯化效果,为吸附树脂的筛选提供指导。方法:采用静态吸附与解吸实验对吸附树脂的纯化性能进行考察,运用紫外-分光光度法和高效液相色谱法分析树脂纯化后的解吸液中的总皂苷类成分的色谱变化情况。结果:D101和X-5型吸附树脂对远志总皂苷的吸附和解吸能力优于其他树脂,色谱法分析结果表明X-5型吸附树脂纯化后的解吸液的水解液,完整地保留了远志皂苷元标准品色谱图中的一系列吸收峰。结论:X-5型吸附树脂纯化远志皂苷的效果好。 相似文献
12.
[目的]观察归脾汤配合针灸治疗心脾两虚型失眠的临床疗效。[方法]治疗组采用归脾汤(人参、白术、黄芪、甘草、远志、枣仁、龙眼肉、当归、木香)配合针刺穴位(脾俞、心俞、神门、三阴交)治疗心脾两虚型失眠62例,并设立对照组,对照组采用口服安定、维生素B_1、谷维素治疗。[结果]治疗组总有效率为96.77%;对照组总有效率为38.71%,两组总有效率比较差异有显著性意义(P<0.05),治疗组疗效优于对照组。[结论]归脾汤配合针灸治疗心脾两虚型失眠能收到良好的临床效果。 相似文献
13.
Ancolio C Azas N Mahiou V Ollivier E Di Giorgio C Keita A Timon-David P Balansard G 《Phytotherapy research : PTR》2002,16(7):646-649
Methanol and chloroform extracts were prepared from various parts of four plants collected in Mali: Guiera senegalensis (Gmel.) Combretaceae, Feretia apodanthera (Del.) Rubiaceae, Combretum micranthum (Don.) Combretaceae, Securidaca longepedunculata (Fres.) Polygalaceae and two plants -collected in Sao Tome: Pycnanthus angolensis (Welw.) Myristicaceae and Morinda citrifolia (Benth.) Rubiaceae were assessed for their in vitro antimalarial activity and their cytotoxic effects on human monocytes (THP1 cells) by flow cytometry. The methanol extract of leaves of Feretia apodanthera and the chloroform extract of roots of Guiera senegalensis exhibited a pronounced antimalarial activity. Two alkaloids isolated from the active extract of Guiera senegalensis, harman and tetrahydroharman, showed antimalarial activity (IC(50) lower than 4 microg/mL) and displayed low toxicity against THP1. Moreover, the decrease of THP1 cells in S phase of the cell cycle, after treatment with harman and tetrahydroharman, was probably due to an inhibition of total protein synthesis. 相似文献
14.
In vitro and in vivo trypanocidal effect of lipophilic extracts of medicinal plants from Mali and Burkina Faso 总被引:1,自引:0,他引:1
AIM OF THE STUDY: To determine the in vitro and in vivo antitrypanosomal activity of extracts of traditionally used plants. MATERIALS AND METHODS: 47 dichloromethane extracts were tested in vitro in the Long-term Viability Assay (LtVA) on Trypanosoma brucei brucei. The most active ones were also tested in vivo using a standardised mouse test. RESULTS: 13 extracts (28%) were active in vitro with MIC-values=100mug/ml, 6 extracts showed MIC-values=50mug/ml. The root extract of Securidaca longepedunculata Fresen. (Polygalaceae) and the leaf extract of Guiera senegalensis J. F. Gmel. (Combretaceae) were able to reduce parasitaemia in mice, experimentally infected with Trypanosoma brucei brucei by 48 and 42% at the dose of 150mg/kg b.w. intraperitoneally, two times daily for 3 days. The extract of Acacia nilotica Delile (Mimosaceae) stem bark showed immunosuppressive effect in vivo. CONCLUSION: The results confirm an effect of the ethnobotanically used plants. Further investigation is needed to optimize the effectiveness of the extracts. 相似文献
15.
远志是临床上最为常用的益志中草药之一,可单用于轻度记忆障碍患者的饮食治疗。近20年来,国内外学者在分子、细胞、组织与整体4个药理学层次及提取物、部位与成分3个化学水平,对远志改善学习记忆障碍的药效作用、物质基础及其作用机制进行了系统而深入的探讨,初步揭示出远志改善学习记忆的临床应用,源于其多成分、多途径、多机制的整合效应。 相似文献
16.
目的:探讨补肾益脑汤治疗血管性痴呆的临床疗效。方法:将96例血管性痴呆患者随机分为治疗组与对照组,对照组46倒采用比拉西坦注射液、银杏叶注射液,静脉滴注。治疗组50例在对照组基础上服用补肾益脑汤(方药组成:熟地黄15g,枸杞子15g,白芍20g,山茱萸15g,巴戟天8g,肉苁蓉15g,党参20g,白术20g,山药30g,茯苓15g,杜仲15g,益智仁20g,石菖蒲30g,郁金15g,远志12g,怀牛膝15g)治疗,观察两组临床疗效。结果:两组均能改善患者的MMSE评分,治疗组优于对照组,差异有统计学意义(P〈0.05)。治疗组症候改善明显,与对照组比较,差异有统计学意义(P〈0.05)。结论:补肾益脑汤治疗血管性痴呆疗效显著。 相似文献
17.
Lee HJ Ban JY Koh SB Seong NS Song KS Bae KW Seong YH 《The American journal of Chinese medicine》2004,32(4):599-610
Polygalae Radix (PR) from Polygala tenuifolia (Polygalaceae) is traditionally used in China and Korea, as this herb has a sedative, anti-inflammatory and antibacterial agent. To extend our understanding of the pharmacological actions of PR in the CNS on the basis of its CNS inhibitory effect, the present study examined whether PR has the neuroprotective action against N-methyl-D-aspartate (NMDA)-induced cell death in primarily cultured rat cerebellar granule neurons. PR, over a concentration range of 0.05 to 5 microg/ml, inhibited NMDA (1 mM)-induced neuronal cell death, which was measured by a trypan blue exclusion test and a 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide (MTT) assay. PR (0.5 microg/ml) inhibited glutamate release into medium induced by NMDA (1 mM), which was measured by HPLC. Pre-treatment of PR (0.5 microg/ml) inhibited NMDA (1 mM)-induced elevation of intracellular Ca2+ concentration ([Ca2+]i), which was measured by a fluorescent dye, Fura 2-AM, and generation of reactive oxygen species (ROS). These results suggest that PR prevents NMDA-induced neuronal cell damage in vitro. 相似文献
18.
Endalkachew Nibret Mohamed L. Ashour Chrispinus D. Rubanza Michael Wink 《Phytotherapy research : PTR》2010,24(6):945-947
The objective of the present study was to evaluate in vitro antitrypanosomal and cytotoxic activities of crude extracts of 20 traditionally used medicinal plants of Tanzania. A total of 40 extracts (dichloromethane and methanol) were screened for antiproliferative activity of bloodstream form of T. b. brucei and human leukaemia HL‐60 cell. Inhibition of cell proliferation was assessed using resazurin as vital stain. Of the 40 extracts tested, the dichloromethane extract from bark of Warburgia salutaris (Canellaceae) exhibited the most potent antitrypanosomal activity with an IC50 value of 10.68 μg/ml. A dichloromethane extract from Lannea stuhlmannii (Anacardiaceae) was found to be the most cytotoxic extract against HL‐60 (IC50 = 27.15 μg/ml). Out of the 20 plants tested, 5 plants exhibited trypanocidal activity with IC50 values below 20 μg/ml. These 5 plants: Entandrophragma bussei (Meliaceae), Securidaca longepedunculata (Polygalaceae), Warburgia salutaris (Canellaceae), Zanha africana (Sapindaceae) and Zanthoxylum chalybeum (Rutaceae) could therefore serve as sources of lead compounds for treatment of trypanosomiasis. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
19.
目的研究我国自然地理分布范围内远志Polygala tenuifolia的分子谱系地理情况,揭示其地理分布格局的形成原因,推测该物种潜在的冰期避难所及冰期后的迁移扩散路线。方法使用叶绿体非编码片段(trn L内含子序列)对远志在我国自然地理分布区内的39个居群308个个体的遗传变异分布模式进行检测。结果共发现26个多态性位点,得到12种叶绿体单倍型。单倍型系统发育分析显示远志自然居群可划分为南、北2个地理组群:北方(包括中国东北、中部、西北地区)组群和南方组群,南北组群没有共享单倍型。居群遗传结构分析表明2个地理组群之间遗传分化较大(Gst=0.783,P<0.001),物种水平遗传多样性较高(Ht=0.755),北方组群不存在明显的谱系地理结构。结论第四纪冰期时远志在中国北方和南方地区存在多个避难所;冰期后或间冰期,北方地区发生了明显的居群扩张事件;南、北组群的分化可能是由于长期的地理隔离所致。 相似文献