唇香草中挥发油的理化性质研究

目的：研究维吾尔药唇香草中挥发油成分的理化性质．方法：采用化学检识、薄层层析法(TLC)、紫外光谱法对唇香草中挥发油成分进行定性分析。结果：唇香草挥发油中含有酚类、醛类、内醇类等不饱和化合物，唇香草中挥发油的薄层层析图谱、紫外光谱图具有明显特征。结论：化学检识、TLC、紫外光谱法可作为控制唇香草内在质量的方法，此方法简便、重现性好。     

Fagaronine,a novel antileukaemic alkaloid

A review is presented about fagaronine, a benzophenanthridine alkaloid responsible for antitumoural activity. Plant source, extraction, biosynthesis, medicinal properties, especially antileukaemic activity, are described.     

小叶锦鸡儿的药理作用

小叶锦鸡儿１ｇ／ｋｇ，０．５ｇ／ｋｇ灌胃给药明显地提高小鼠热痛阈（Ｐ＜０．００１），减少酒石酸锑钾所致的小鼠扭体反应次数（Ｐ＜０．０１），对抗二甲苯所致小鼠耳壳炎症（Ｐ＜０．０１），抑制蛋白加热变性（Ｐ＜０．０１），明显地降低氯仿诱发的小鼠室颤发生率。     

引种巴西甘薯叶抗肿瘤活性部位的筛选

目的：提取巴西甘薯叶不同极性部位(SM,SM-A,SM-B),进行抗肿瘤活性及剂量相关性研究。方法： 以体外培养的人肝癌细胞Hep3B、肺癌细胞A549、胃癌细胞MGC803为研究对象,MTS法分别测定不同极性部位 SM,SM-A,SM-B对以上各细胞株增殖活性的影响。结果：SM,SM-A,SM-B对3种肿瘤细胞均有一定的抑制作用; SM-B活性最强,对上述各肿瘤细胞的抑制活性表现为MGC803>A549>Hep3B,其IC50分别为15.17 mg/L(P<0.05), 72.64 mg/L(P<0.05)和165.47 mg/L (P<0.05)。结论：巴西甘薯叶具有一定的抗肿瘤活性,SM-B为主要活性部位。     

A panoramic view on phytochemical,nutritional, and therapeutic attributes of Ziziphus mauritiana Lam.: A comprehensive review

Ziziphus mauritiana (Rhamnaceae), commonly known as Indian jujube, is a pharmacologically diverse medicinal plant. A plethora of active phytochemical constituents of this plant has been revealed so far, namely, berberine, quercetin, kaempferol, sitosterol, stigmasterol, lanosterol, diosgenin, and so forth. Several studies demonstrated the exploration of pharmacological potential of various parts such as fruits, leaves, and stems of the plant as antioxidant, cytotoxic, antimicrobial, anti‐diarrhoeal, antidepressant, immunomodulator, and hepatoprotective. This review gives a unique summary including phytochemistry, nutritional value, and significant pharmacological importance of Z. mauritiana. The literature search was carried out via search engine PubMed, Science Direct, and so on. The data were heterogeneous in terms of leaves, stem, roots, and fruits which were used for different experimental findings, which made the comparison a lengthy task. Study findings suggested that the extracts from this plant may possess numerous types of pharmacological activities. As the search for novel drugs from botanical sources continues, there is need for future investigations to isolate and characterize pharmacologically active agents that confer medicinal properties on Z. mauritiana, as well as to elucidate the structures of these agents by which they exert their healing properties and to scientifically validate the existing traditional practices concerning its health benefits.     

利用稻瘟霉模型筛选铁刀木生物活性成分

目的利用稻瘟霉生物活性筛选模型,筛选铁刀木中具有生物活性的化学成分。方法通过观察样品引起稻瘟霉分生孢子或菌丝形态生长异常或生长抑制的情况,确定铁刀木中具有生物活性的部位以及化学成分。结果确定了铁刀木树干乙醇粗提物的生物活性部位为二氯甲烷和乙酸乙酯部位,其使稻瘟霉孢子菌丝体最小变形浓度(MMDC)分别为125、63μg·ml-1;筛选得到2个具有生物活性的化合物(CS2、CS7),其MMDC分别为63、31μg·ml-1。结论本模型首次用于铁刀木活性成分的追踪分离,应用本方法筛选天然药物活性成分,方便、快捷、成本低,显示了广阔的应用前景。     

水线草的化学成分研究

目的 研究茜草科耳草属植物水线草Hedyotis corymbosa的化学成分.方法 利用柱色谱、制备薄层色谱和重结晶进行分离纯化.通过波谱技术鉴定化合物的结构.结果 分离得到13个化合物,分别鉴定为(+)-lyo-niresinol-3a-O-β-D-glucopyranoside(Ⅰ)、槲皮素(quercetin,Ⅱ)、七叶内酯(esculetin,Ⅲ)、东莨菪内酯(scopoletin,Ⅳ)、耳草酮A(hedyotiscone A,Ⅴ)、对羟基苯甲酸(p-hydroxybenzoic acid,Ⅵ)、原儿茶酸(protocatechuic acid,Ⅶ)、香草酸(vanillic acid,Ⅷ)、丁香酸(syringie acid,Ⅸ)、(+)-催吐萝芙叶醇[(+)-vomifoliol,Ⅹ]、(-)-二氢催吐萝美叶醇[(-)-dihydrovomifoliol.Ⅺ]、S-(+)-去氢催吐萝芙叶醇[S-(+)-dehydrovomifoliol,Ⅻ]和茜素1-甲醚(aliza-rin 1-methyl ether,).结论 化合物Ⅰ～均为首次从该植物中分离得到.     

The anti-diabetic properties of Guazuma ulmifolia Lam are mediated by the stimulation of glucose uptake in normal and diabetic adipocytes without inducing adipogenesis

ETHNOPHARMACOLOGICAL IMPORTANCE: Guazuma ulmifolia Lam (Sterculiaceae) is a plant extensively used in México for the empirical treatment of type 2 diabetes. AIM OF THE STUDY: To investigate the anti-diabetic mechanisms of Guazuma ulmifolia. MATERIALS AND METHODS: Non-toxic concentrations of Guazuma ulmifolia aqueous extracts (GAE) were assayed on adipogenesis and 2-NBDglucose uptake in the murine 3T3-F442A preadipose cell line. RESULTS: GAE added to adipogenic medium (AM) did not affect adipogenesis at any of the tested concentrations (1-70 microg/ml), whereas in AM lacking insulin GAE 70 microg/ml induced triglyceride accumulation by 23%. On the other hand, GAE 70 microg/ml stimulated 2-NBDG uptake by 40% in insulin-sensitive 3T3-F442A adipocytes and by 24% in insulin-resistant adipocytes, with respect to the incorporation showed by insulin-sensitive adipocytes stimulated with the hormone. CONCLUSION: Guazuma ulmifolia exerts its anti-diabetic effects by stimulating glucose uptake in both insulin-sensitive and insulin-resistant adipocytes without inducing adipogenesis.     

唇香草质量标准的初步研究

目的建立唇香草药材的质量标准,为药用植物资源的开发利用提供科学依据。方法对唇香草原植物进行鉴定,并对其性状进行描述;对唇香草的茎、叶和粉末进行显微鉴别;对唇香草水提液和醇提液化学成分进行理化鉴别;以蒙花苷、咖啡酸、迷迭香酸对照品对唇香草药材采用薄层色谱法进行定性鉴别;测定7批唇香草药材的水分、总灰分、酸不溶性灰分。结果唇香草药材水分不得超过9%,总灰分不得超过12%,酸不溶性灰分不得超过4%。结论建立的质量标准定性方法简便,准确,灵敏度高,重现性好,专属性强,可作为唇香草药材质量控制的参考。