Hypolipidemic effect of MeOH extract of Bambusae Caulis in Taeniam in hyperlipidemia induced by Triton WR-1339 and high cholesterol diet in rats

Hyperlipidemia has been implicated in atherosclerosis which is the leading cause of death among world population and resulting from lipid metabolic changes is a major cause of atherosclerosis. Bambusae Caulis in Taeniam belongs to Bambusaceae is the stem of Phyllostachys nigra (Lodd.) Munro var. henonis (Bean) Stapf of Phyllostachys bambusoides Siebold et Zuccarini, the perennial evergreen tree. The green middle layer of stem is dried in string-shape I shadow after the bark had been removed. In this study, the effects of middle layer of PN, PB, PP, and BCT on rat with hyperlipidemia, induced by Triton WR-1339 and high cholesterol diet were investigated. We measured plasma levels of triglyceride, total cholesterol, low-density lipoprotein (LDL)-cholesterol, and high-density lipoprotein (HDL)-cholesterol as measure of its hyperlipidemic effects. As a result, all of the Bambusae Caulis in Taeniam was reduced total cholesterol, LDL. Inhibition rate on LDL-oxidation, hACAT-1, and hACAT-2 was increased dose-dependently. Therefore all of the Bambusae Caulis in Taeniam is a good candidate for the treatment on Triton WR-1339 and high cholesterol diet-induced blood circulatory disorders, obesity, and hyperlipidemia.     

冠脉宁片的制备与质量标准完善

目的：制备冠脉宁片,完善其质量标准。方法：采用薄层色谱法对鸡血藤进行定性鉴别。采用HPLC法对丹参中丹参素进行定量分析,色谱柱为Diamonsil C18柱（200mm×4.6mm,5μm）,流动相为甲醇-1%冰乙酸（10∶90）,流速1.0ml/min,检测波长280nm。结果：该制备工艺简便可行。鸡血藤的薄层色谱斑点清晰,专属性强。在10.71~96.39μg/ml范围内,丹参素浓度与色谱峰面积线性关系良好（r=0.999 9）,平均回收率为98.72%,RSD为0.82%（n=3）。结论：本研究所建立的定性定量方法简便、准确、重复性好,可作为冠脉宁片的质量控制方法。     

海风藤的活性成分研究

 目的研究产于四川攀枝花地区的海风藤化学成分,为海风藤的开发利用提供依据。方法通过多种色谱手段,从海风藤藤茎的脂溶性部位分离得到了5个化合物,根据化合物的光谱数据(IR,UV,MS,¹H-NMR,¹³C-NMR)鉴定了此5个化合物。结果化合物(Ⅰ～Ⅴ)分别为：8-羟基-2,2′-二甲基-苯并二氢吡喃-4-酮-6-甲酸(Ⅰ)、8-羟基-2,2′-二甲基-苯并二氢吡喃-4-酮-6-甲酸甲酯(Ⅱ)、香草酸(Ⅲ)、胡萝卜苷(Ⅳ)、豆甾醇(Ⅴ)。结论化合物Ⅰ和Ⅱ具有一定的细胞毒活性,对HL-60和BEL-7404两种人肝癌细胞系的ED₅₀值分别是3.27,12.5和8.4,15.1 mg·L^-1。     

Effects of the ethyl acetate fraction of Spatholobi caulis on tumour cell aggregation and migration

The ethyl acetate (EA) fraction obtained from a methanol extract of Spatholobi caulis (Leguminosae) has been investigated for anti-metastatic activities in vitro. The EA fraction of Spatholobi caulis inhibited platelet aggregation induced by B16BL6 melanoma cells with an IC(50) of 50 microgram/mL. The EA fraction significantly inhibited HT1080 cancer cell invasion through a matrigel-coated filter with an IC(50) of 25 microgram/mL. Messenger RNA expression of uPA was effectively decreased in HT1080 cells by the EA fraction of Spatholobi caulis with an IC(50) of 30 microgram/mL, but the expressions of MMP-2 (matrix metalloproteinase) and TIMPs (tissue inhibitors of metalloproteinases) were not changed. These findings indicated that the EA fraction suppressed tumour cell invasion by downregulation of uPA (urokinase-type plasminogen activator). Taken together, these results suggest that the EA fraction of Spatholobi caulis may have anti-metastatic activities by blocking tumour cell-induced platelet aggregation (TCIPA) and tumour cell invasion.     

葛藤体外抗耐甲氧西林金色葡萄球菌作用初步研究

目的：初步研究葛藤不同提取部位体外对耐甲氧西林金色葡萄球菌抗菌作用。方法：采用琼脂稀释法测定了葛藤3个不同提取部位对近期临床分离的20株耐甲氧西林金色葡萄球菌（MRSA）的最小抑菌浓度（MIC）值。结果：葛藤不同提取部位对MRSA的MIC值范围分别是,40%乙醇提取部位为10.4～83.5 mg/mL,其中多数为20.8 mg/mL;水煎液部位为20.8～83.5 mg/mL,其中多数为41.8 mg/mL;95%乙醇提取部位为41.8～83.5 mg/mL,其中绝大多数为83.5 mg/mL。结论：葛藤3个不同提取部位对耐甲氧西林金色葡萄球菌均有一定的抗菌作用,其中以40%乙醇提取部位抑菌效果最好。     

赶黄草花与茎、叶HPLC指纹图谱比较

目的: 建立赶黄草花的HPLC指纹图谱,并对赶黄草花、茎、叶不同部位的指纹图谱进行比较,寻找赶黄草不同部位质量评价与控制方法。 方法: 采用 ODS柱,流动相乙腈-0.1%甲酸水,梯度洗脱,流速0.8 mL ·min^-1,柱温30 ℃,检测波长280 nm,进样量10 μL。 结果: 赶黄草花共标示出15个共有峰,其中5号峰为芦丁峰,9号峰为槲皮素峰;10批赶黄草花的相似度在0.925~0.960。赶黄草花分别与茎、叶对比,花的共有峰数目最多,茎最少;茎、叶、花指纹特征峰相对含量有较大差异,花所含特征峰成分的相对含量基本高于茎和叶。 结论: 该方法准确可靠,重复性好,为赶黄草各部位药材质量评价与控制提供参考;为保证药材质量,建议赶黄草药材在花期采收。     

木通与川木通关木通的鉴别与应用

木通、川木通与关木通为常用中药。三者除来源不同外,在性状鉴别和所合成分及药性等方面均不相同。由于一字之差,极易造成混用。最近,许多媒体报道龙胆泻肝丸中关木通致肾损害的消息,引起了较大关注,为了确保用药安全,现将其主要鉴别要点简介如下。     

中药配伍对关木通中马兜铃酸A含量的影响

目的：运用高效液相色谱法找出同关木通配伍后，使其中马兜铃酸A含量显著降低的中药及其最佳配比。方法：关木通与筛选药物配伍后，用反相高效液相色谱法（RP-HPLC）测定马兜铃酸A吸收值判断其含量是否降低。结果：当归、丹皮、生地、熟地、大黄可显著降低关木通中马兜铃酸A的含量。其中，当归与关木通质量比为1：1，生地与关木通质量比为0．5：1，丹皮与关木通质量比为1：1是最佳配比。结论：关木通配伍上述中药后，马兜铃酸A的含量能显著降低。     

百草痛立消药酒的薄层色谱鉴别

目的建立百草痛立消药酒的鉴别方法.方法采用薄层色谱法对三七、寮刁竹、海风藤和千年健药材进行鉴别.结果所选用的薄层色谱法均能检出百草痛立消药酒中的三七、徐长卿、海风藤和千年健药材.结论该法操作简便、专属性和重复性好,可作为百草痛立消药酒的鉴别方法.