大黄素

The results are as follows:(1) Emodin enhances the electrical and contractive activities of the smooth muscle cells in guinea pig taenia coli....

其促进平滑肌细胞电和收缩活动的作用与glybenclamide相似，而与四乙胺和BaCl2有明显区别。提示大黄素的作用机制与抑制细胞膜KATP等钾通道的活性相关。

Relationship between emodin concentration and intracellular [Ca2＋]I as well as kinetics of [Ca2＋]I in guinea pig taenia coli cells were studied.

利用Fluo－3荧光探针检测细胞内自由Ca2＋浓度([Ca2＋]I)，研究了大黄素升高豚鼠结肠带细胞[Ca2＋]I的量―效关系和动态变化特征，及GDP和胞外Ca2＋浓度对其的影响。

By chromatographic techniques. On the basis of physico-chemical properties and spectral data, they were identified as α-amyrin,α-amyrin acetate, 27-hydroxy-α-amyrin,β-amyrin,β-amyrin acetate, ursolic acid,β-sitosterol, dauricine, emodin.

中分离得到9个化合物，通过理化性质和光谱分析，分别鉴定为：α-香树脂醇，α-香树脂醇乙酸酯，27-羟基－α-香树脂醇，β-香树脂醇，β-香树脂醇乙酸醇，熊果酸，β-谷甾醇，β-胡萝卜甙，大黄素。

The binding properties of barbaloin to DNA were investigated by UV?

目的 探讨芦荟大黄素苷与DNA的相互作用。

The free radical scavenging properties of six Aloe species are to be investigated in some modified chemical system. The antioxidant was purified by silica column and thin layer chromatography and analyzed by HPLC. A fraction was purified from A. brevifolia Mill showed the most effective scavenging activities on 〓 and ·OH (66. 01% and 38. 98% respectively). With the analysis of IR spectrum, UV spectrum and mass spectrum, the structure of FA was identifed as 8-C-D-glucopyranosyl-2- [2-hydroxy] propyl-5-methyl-7-hydroxychromone. Its scavenging activity on free radicals is higher than that of aloe-emodin. Its antioxidant activity may be due to the phenoxyl on glucosyl chromone which can be react with free radicals and form relatively stable free radicals.

本研究利用分别产生超氧阴离子自由基和羟自由基的化学模型体系研究比较了不同品种芦荟提取物的清除活性氧自由基的抗氧化作用，进一步利用硅胶柱结合薄层层析法和反相高压液相色谱法，从短叶芦荟叶子中首次分离了具有较强自由基清除能力（超氧阴离子自由基和羟自由基清除率分别为66.01％和38.98％）的成分FA，利用红外光谱、紫外光谱和质谱等仪器分析结果推断出该活性成分的分子结构为8-C-吡喃葡萄糖-2-[2-羟基]-丙基-5-甲基-7-羟基对氧萘酮，它的自由基清除能力高于芦荟大黄素，是一种天然抗氧化剂。

The kinetic mechanisms for the extraction of active constituents in dissimilar plants Lycoris radiata and Rhizma polygoni cuspidati by microwave-assisted extraction were investigated. Lycorine, lycoramine and galanthamine in Lycoris radiate, resveratrol and emodin in Rhizma polygoni cuspidati were target constituents.

以鳞茎药材石蒜和根茎药材虎杖作为研究对象，采用微波辅助提取石蒜中的石蒜碱、力可拉敏和加兰他敏以及虎杖中的大黄素和白藜芦醇，研究了提取过程的动力学机理。

The aim of the present study is to explore the mechanisms of photodynamic therapy with aloe-emodin-induced H460 cell death.

本研究主要的目的是探讨芦荟大黄素配合光动力疗法引发人类肺癌H460细胞之细胞死亡的作用机制。

The present study also demonstrated that rottlerin significant prevented the PDT with aloe-emodin-induced the phosphorylation and fragmentation of Bcl-2 in H460 cells.

在本研究中，rottlerin也显著的抑制芦荟大黄素配合光照引起H460细胞之Bcl-2磷酸化及断片的现象。

In this study, rottlerin, a PKCδ-selective inhibitor, was used to examine the mechanisms of PDT with aloe-emodin-induced H460 cell anoikis.

本研究也以PKCδ选择性抑制剂rottlerin评估芦荟大黄素配合光动力疗法引发H460细胞之失巢凋亡的真正机制。

The mechanisms by which rottlerin inhibited PDT with aloe-emodin-induced H460 cell anoikis probably involved the changes in mitochondrial functions, the expression of cytoskeleton regulatory proteins and the translocation of PKCα,δ and ε.

我们证实rottlerin对於芦荟大黄素配合光动力疗法引发H460细胞失巢凋亡的抑制应与粒线体功能、PKC家族成员的蛋白分布及细胞骨架调控蛋白的表现有关。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。