HPLC法测定七味清咽气雾剂中苦参碱的含量

目的：用HPLC测定七味清咽气雾荆中苦参碱的含量。方法：采用高效液相法，使用Shim-pack VP-ODS色谱柱，以乙腈珈．2％三乙胺溶液（1．4：98．6）用磷酸调至pH为2．5，柱温为55℃，流速为0．7mL／min，检测波长为214mn。结果：苦参碱在64．4～1030μg范围内呈良好的线性关系（r=0．9997），回收率为98．6％，RSD为0．9％。结论：方法灵敏、准确、专属性强，回收率高，重现性好，可作为七味清咽气雾剂的质量标准。     

中药山豆根的形态组织学研究

对目前国内作山豆根用的9种不同植物来源的生药进行了形态组织学的比较研究,观察并描述了它们的生药性状和组织构造,并列出了生药的分种检索表。     

HPIC法测定七味清咽气雾剂中苦参碱的含量

目的:用HPLC测定七味清咽气雾剂中苦参碱的含量。方法:采用高效液相法,使用Sh im-pack VP-ODS色谱柱,以乙腈—0.2%三乙胺溶液(1.4:98.6)用磷酸调至pH为2.5,柱温为55℃,流速为0.7mL/m in,检测波长为214mn。结果:苦参碱在64.4~1030μg范围内呈良好的线性关系(r=0.9997),回收率为98.6%,RSD为0.9%。结论:方法灵敏、准确、专属性强,回收率高,重现性好,可作为七味清咽气雾剂的质量标准。     

纸基-表面增强拉曼光谱法快速鉴别染色南五味子药材

目的 采用纸基-表面增强拉曼光谱法(SERS)对染色南五味子进行快速鉴别。方法 选用浸泡法制备的银胶纸作为SERS基底,擦拭经乙醇-水溶液润湿的南五味子,银胶纸立即进行SERS检测;先后对银溶胶的浓缩倍数、银胶纸的SERS增强效果及稳定性等因素进行考察。结果 成功鉴别低浓度酸性红、赤藓红染色的南五味子。结论 纸基-SERS法可实现非法染色南五味子的快速、准确、无损的鉴别,有望应用于快检领域。     

Modulatory effects of Saussurea lappa root aqueous extract against ethephon‐induced kidney toxicity in male rats

Ethephon (2‐chloroethyl phosphonic acid) is a plant growth promoter used to control the plant growth process by liberating ethylene and stimulating the production of endogenous ethylene. Medicinal plants are sources of novel drug discovery targets. Costus (Saussurea lappa) has been used as traditional Chinese medicine. The current study was conducted to examine the possible modifying effects of costus (S. lappa) root aqueous extract against kidney toxicity induced by ethephon in male rats. A total of 50 adult male rats were divided into five groups (first, control; second, costus; third, ethephon; fourth, posttreated ethephon with costus; fifth, ethephon self‐healing). There is a significant increase in the serum levels of urea, creatinine, potassium ions, chloride ions, kidney injury, DNA damage, and proliferating cell nuclear antigen expressions in treated rats with ethephon when compared to the control group. In contrast, the treated rats with ethephon revealed a significant decrease in the levels of sodium ions and an insignificant decrease in the calcium ions. Saussurea lappa extract modified these alterations when compared to the control group. As a result, costus root extract significantly reduced rat kidney toxicity after ethephon administration. We recommend costus to be included in diet for its valuable effects, and also producers and consumers should become more aware about the toxic effects of ethephon.     

高效液相色谱法同时测定山豆根中苦参碱和氧化苦参碱含量

目的建立同时测定山豆根中苦参碱和氧化苦参碱含量的方法。方法用三氯甲烷超声提取，通过中性氧化铝柱，依次以三氯甲烷、三氯甲烷-甲醇洗脱。色谱柱以氨基键舍硅胶为填充剂（250mm×4．6mm，5μm），流动相为乙腈-无水乙醇-3％磷酸溶液（80：10：10），流速为1．0mL／min，检测波长205nm，柱温30℃。结果苦参碱进样量在0．1021—4．082μg范围内与峰面积值呈良好的线性关系（r=0．9999），氧化苦参碱进样量在0．1943—3．886μg范围内与峰面积值呈良好的线性关系（r=0．9998），平均回收率均在99％以上。结论方法准确、灵敏度高、重现性好，能同时测定山豆根中苦参碱和氧化苦参碱的含量，可作为山豆根药材质量控制的含量检测方法。     

乌蔹莓对外科化脓性感染治疗作用的研究

目的探讨乌蔹莓对外科化脓感染治疗作用,为临床治疗提供科学依据。方法先建立80只小鼠局部化脓感染模型,然后随机分为乌蔹莓组、四环素组、鱼石脂膏组及对照组。结果乌蔹莓治疗效果明显优于鱼石子膏组及对照组(P<0.01),与四环素组比较差异不明显(P>0.05)。结论乌蔹莓对外科化脓感染具有明显治疗效果。     

含过量山豆根中药煎剂致中毒性脑病

1例49岁男性患者因银屑病每日服用含山豆根15 g（常用量为3～6 g/d）及11种其他中药的中药煎剂。第4天,患者出现四肢无力,食欲下降、言语不畅、记忆力减退。第11天停药。第15天突发昏迷,大小便失禁,四肢僵直。考虑为山豆根过量所致中毒性脑病。经大剂量糖皮质激素联合人免疫球蛋白静脉注射及多种对症治疗,患者神经系统症状消失。     

Preliminary phytochemical screening and antimicrobial evaluation of three medicinal plants used in Nigeria

Methanol extract of three Nigerian medicinal plants were screened for antimicrobial activity using modified Kirby-Bauer disc diffusion and agar dilution techniques to determine the diameters of zone of inhibition and minimum inhibitory concentrations (MIC) of the extracts respectively. The extract of each of the plants were tested against five clinical bacterial isolates comprising of two Gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus) and three Gram-negative bacteria (Pseudomonas aeruginosa, Escherichia coli and Klebsiella pneumonia) organisms. All the extracts exhibited moderate to high level of antimicrobial activities against these microorganisms. Phytochemical screening of powdered plant material revealed the presence of some secondary metabolites such as alkaloids, saponins, tannins, anthraquinones and flavonoids. These Nigerian medicinal plants could be developed into cheap, safe and culturally acceptable standardized herbal products and may serve as a source of new molecules for broad-spectrum antimicrobial agents.     

Two new triterpenoids from the resin of Styrax tonkinensis

Two new triterpenoids, 3β,6β-dihydroxy-12-oxo-13Hα-olean-28,19β-olide (1) and 3-oxo-olean-11,13(18)-dien-28,19β-olide (2) were isolated from the resin of Styrax tonkinensis (Pier.) Craib. The structures of both triterpenoids were determined by physicochemical and spectroscopic methods. Compound 1 is the second triterpene found with cis-fused C/D ring from the resin, which is rarely observed in oleanane-type triterpenes.