Gastrointestinal motility enhancing effect of saussureae radix

The effect of Saussureae radix on gastrointestinal motility was tested by its ability to enhance charcoal meal transport in mice. The 25 mg/kg of the acetone extract orally administered significantly enhanced gastrointestinal motility. Dehydrocostus lactone was purified from the acetone extract as an active principle.     

HPLC法测定智托洁白丸中木香烃内酯和去氢木香内酯

目的建立藏药智托洁白丸(寒水石、矮紫荆、诃子、兔耳草、木香等)中木香烃内酯和去氢木香内酯的定量测定方法。方法采用反相HPLC法测定智托洁白丸中木香烃内酯和去氢木香内酯。色谱柱依利特Hypersil-ODS C18柱;流动相乙腈-水(46∶54);体积流量1.0 mL/min;紫外检测波长225 nm。结果木香烃内酯在0.126 4～1.264μg/mL的范围内,去氢木香内酯在0.176 8～1.768μg/mL的范围内呈良好的线性关系,r值均为0.999 9;平均加样回收率分别为98.60%和97.77%,RSD分别为1.47%和0.77%。结论本方法专属性强,灵敏度高,重现性好,适用于藏药智托洁白丸中木香烃内酯和去氢木香内酯的测定。     

木香降血糖有效部位及有效成分研究

目的筛选木香中降血糖活性部位及主要成分。方法制备木香乙醇提取物,乙醇提取物醋酸乙酯部位、正丁醇部位和水提取部位;用HepG2细胞消耗葡萄糖模型和四氧嘧啶致糖尿病小鼠模型测定各提取物的降血糖活性;降血糖活性强的醋酸乙酯部位用柱色谱法继续分离、精制,得2个化合物,经NMR等鉴定化合物结构;并对2个化合物进行降血糖活性研究。结果木香醋酸乙酯部位有较强的降血糖作用,从木香醋酸乙酯部位中分离得到木香烃内酯和去氢木香内酯,且两者均可降低四氧嘧啶所致糖尿病小鼠的血糖,并显示很好的抗氧化作用。结论木香烃内酯和去氢木香内酯可能是木香的降血糖活性成分,抑制氧化应激从而减轻胰岛素抵抗可能是其降血糖机制。     

HPLC同时测定复方黄连素片中3种成分的含量

目的：同时测定复方黄连素片中芍药苷、木香烃内酯、去氢木香内酯3种成分的含量。方法：采用高效液相色谱法,C₁₈柱,以乙腈（A）-0.2%的磷酸溶液（B）为流动相进行梯度洗脱,流速1.0 mL·min^-1,检测波长225 nm,柱温30℃。结果：芍药苷在0.180 9~3.618 μg线性关系良好（r=0.999 8）,平均加样回收率为99.0%,RSD 0.94%;木香烃内酯在0.129 85~2.597 μg线性关系良好（r=0.999 7）,平均加样回收率为98.4%,RSD 1.62%;去氢木香内酯在0.120 8~2.416 μg线性关系良好（r=0.999 6）,平均加样回收率为97.9%,RSD 1.21%。结论：该方法简便、准确,可用于测定复方黄连素片的含量。     

木香的化学成分、药理作用、临床应用研究进展及质量标志物预测

木香为我国传统大宗药材,是多种中成药的原料,《中国药典》2020版一部以木香烃内酯和去氢木香内酯作为指标成分,难以系统阐释木香“功效-成分-质量”的关系。近年来,国内外学者对木香各方面研究逐渐深入,许多新的化学成分与药理作用不断被发现。在对其化学成分和药理作用进行系统总结的基础上,根据质量标志物的核心理念,从植物亲缘、药效、药性、配伍、化学成分可测性等方面,对木香质量标志物进行预测分析,以期为木香质量评价体系的建立健全提供参考。     

心可舒片的质量控制

目的 建立心可舒片的质量控制方法。方法 采用高效液相色谱法对山楂中黄酮类成分进行定性鉴别,对木香中主要成分木香烃内酯与去氢木香内酯进行定量测定。结果 鉴别方法分离度良好;木香烃内酯和去氢木香内酯与相邻峰完全分离;线性关系良好,平均加样回收率(n=9)分别为99.99%(RSD=1.3%)和99.68%(RSD=1.1%)。结论 该方法专属性强、准确度高、重复性好,可用于心可舒片的质量控制。     

HPLC法同时测定香连化滞丸中10种成分

目的建立同时测定香连化滞丸中芍药苷、甘草苷、厚朴酚、阿魏酸、橙皮苷、木香烃内酯、去氢木香烃内酯、辛弗林、黄芩苷、盐酸小檗碱10种成分的HPLC方法。方法采用RP-HPLC法,色谱柱为Waters Symmetry-C18(150 mm×4.6mm,3.5μm);流动相为甲醇-乙腈-水(50∶45∶5,A)和甲醇-0.1%磷酸水溶液(4∶96,B),梯度洗脱,体积流量1.0 m L/min;柱温45℃。结果待测定的10种指标成分中芍药苷在1.5~15.0μg/m L、甘草苷在0.5~5.0μg/m L、厚朴酚在1.0~10.0μg/m L、阿魏酸在0.5~5.0μg/m L、橙皮苷在12.5~125.0μg/m L、木香烃内酯在2.5~25.0μg/m L、去氢木香烃内酯2.5~25.0μg/m L、辛弗林在0.75~7.5μg/m L、黄芩苷在1.5~15.0μg/m L、盐酸小檗碱在0.75~7.5μg/m L线性关系良好;精密度良好,RSD均小于2.0%;重复性良好,RSD均小于2.0%;在室温条件下12 h内稳定;平均加样回收率在98.5%~101.4%,RSD均小于2.0%。结论方法准确、灵敏、可靠,重现性较好,可用于香连化滞丸的质量控制。     

Plant Origin of Green Propolis: Bee Behavior, Plant Anatomy and Chemistry

Propolis, a honeybee product, has gained popularity as a food and alternative medicine. Its constituents have been shown to exert pharmacological effects, such as anti-microbial, anti-inflammatory and anticancer. Shoot apices of Baccharis dracunculifolia (alecrim plant, Asteraceae) have been pointed out as sources of resin for green propolis. The present work aimed (i) to observe the collecting behavior of bees, (ii) to test the efficacy of histological analysis in studies of propolis botanical origin and (iii) to compare the chemistries of alecrim apices, resin masses and green propolis. Bee behavior was observed, and resin and propolis were microscopically analyzed by inclusion in methacrylate. Ethanol extracts of shoot apices, resin and propolis were analyzed by gas chromatography/mass spectroscopy. Bees cut small fragments from alecrim apices, manipulate and place the resulting mass in the corbiculae. Fragments were detected in propolis and identified as alecrim vestiges by detection of alecrim structures. Prenylated and non-prenylated phenylpropanoids, terpenoids and compounds from other classes were identified. Compounds so far unreported for propolis were identified, including anthracene derivatives. Some compounds were found in propolis and resin mass, but not in shoot apices. Differences were detected between male and female apices and, among apices, resin and propolis. Alecrim apices are resin sources for green propolis. Chemical composition of alecrim apices seems to vary independently of season and phenology. Probably, green propolis composition is more complex and unpredictable than previously assumed.     

没药化学成分及抗炎活性研究

目的 研究没药Myrrha二氯甲烷部位化学成分及部分化合物抗炎活性。方法 采用多种柱色谱方法和制备液相色谱进行分离纯化,并利用波谱学方法对其结构进行鉴定。通过检测化合物对脂多糖(lipopolysaccharide,LPS)诱导的BV2细胞释放炎症介质NO的抑制能力,来评估所分离化合物的抗炎作用。结果 从没药的二氯甲烷部位中分离得到15个化合物,通过波谱数据与文献数据进行对比,分别鉴定为苍术内酯Ⅲ(1)、myrrhterpenoid N(2)、木香烃内酯(3)、莪术二酮(4)、去氢假虎刺酮(5)、eurylosesquiterpenol E(6)、t-杜松醇(7)、10β-hydroxyisodauc-6-en-14-al(8)、oplopanone(9)、去氢木香内酯(10)、4-hydroxy-4,7-dimethyl-α-tetralone(11)、3-hydroxy-6-methylacetophenone(12)、(2E,4E)-6-hydroxy-2,6-dimethylhepta-2,4-dienal(13)、erlangerin D(14)、(-)-dimethylma...     

一测多评法同时测定蒙药古日古木-13丸中6种成分

目的建立古日古木-13丸中6种成分没食子酸、羟基红花黄色素A、栀子苷、鞣花酸、木香烃内酯、去氢木香内酯的一测多评方法,验证该方法在古日古木-13丸质量分析中应用的科学性与可行性。方法采用HPLC法,以栀子苷为内参物,建立没食子酸、羟基红花黄色素A、鞣花酸、木香烃内酯、去氢木香内酯的相对校正因子(fs/i),并利用fs/i计算古日古木-13样品中该5种成分的含量,同时采用外标法计算各成分的含量,并比较2种方法差异。结果没食子酸、羟基红花黄色素A、鞣花酸、木香烃内酯、去氢木香内酯的fs/i分别为0.481 0、0.906 4、0.170 9、0.971 2、1.261 5。一测多评法与外标法得到的6批古日古木-13丸样品含量测定结果 RSD<2.0%,没有显著差异。结论以栀子苷为内参物建立fs/i准确,易行,一测多评法可以用于古日古木-13丸中多指标成分的质量评价。