Revealing mechanism of Caulis Sargentodoxae for the treatment of ulcerative colitis based on network pharmacology approach

Objective: The traditional Chinese medicine Caulis Sargentodoxae is widely used in the treatment of ulcerative colitis (UC), but the mechanism remains unknown. The present study aims to reveal its effective components, targets and pathways through network pharmacology and bioinformatics approaches.Materials and methods: Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP) was used to identify effective components. The ligand-based targets prediction was achieved through SwissTargetPrediction and TargetNet. UC-related targets were identified using Gene Expression Omnibus (GEO) data and DisGeNET. The common targets of disease and components were constructed and analyzed by PPI network. Lastly, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses are used to explain the functions of these common targets. Components-Targets-Pathways network was visualized and analyzed to further reveal the connection between the components and targets.Results: Eight active components and 102 key targets were identified to play an important role in UC. These targets were related to regulation of protein serine/threonine kinase activity, positive regulation of cell motility, response to molecule of bacterial origin, response to toxic substance, ERK1 and ERK2 cascade, peptidyl-tyrosine modification, inositol lipid-mediated signaling, cellular response to drug, regulation of inflammatory response and leukocyte migration. Moreover, HIF-1 signaling pathway and PI3K-Akt signaling pathway were the key targets involved in UC-related signaling pathways.Conclusion: The eight active components of Caulis Sargentodoxae mainly play a therapeutic role for UC through synergistic regulation of HIF-1 signaling pathway and PI3K-Akt signaling pathway.     

鸡血藤化学和药理研究进展

本文对鸡血藤的化学及药理研究进展进行了综述     

鸡血藤木质部与韧皮部中代谢产物的差异性分析

本研究基于超快速液相色谱-串联四级杆飞行时间高分辨质谱(UFLC-Triple TOF-MS/MS)技术,对鸡血藤木质部与韧皮部中代谢产物进行分析;用主成分分析(PCA)和正交偏最小二乘法-判别分析(OPLS-DA)处理数据,筛选并鉴定潜在的差异化合物;结合网络药理学分析,挖掘鸡血藤木质部和韧皮部的差异化合物所对应的潜在靶点及通路,并构建“成分-靶点-通路”网络。结果鸡血藤木质部与韧皮部样品在统计学模型中可有效区分,初步筛选并鉴定出13个差异成分,且13个差异成分在木质部中的相对含量均显著高于韧皮部;通过网络药理学分析,发现化合物维斯体素可能是鸡血藤的关键活性成分,PIK3R1、PIK3CA、MAP2K1、PIK3CB这4个靶点发挥的作用可能较为关键,鸡血藤中的差异标志物主要对蛋白聚糖作用癌症、癌症通路、PI3K-Akt信号通路发挥作用。本研究为揭示不同组织部位对鸡血藤代谢产物合成积累的影响提供基础资料,也为进一步明确鸡血藤的功效物质基础和主要调控靶点提供依据。     

青风藤水煎液对蟾蜍坐骨神经干电生理的影响

目的：探索青风藤对蟾蜍离体坐骨神经干电生理特性的影响。方法：40只蟾蜍随机分成4组：任氏液对照组和青风藤低、中、高剂量组（0.2、0.10、0.05 g/ml）（n=10）,通过RM6240C多道生理信号采集处理系统记录其在不同浓度青风藤水煎分别浸泡15 min和30 min时,动作电位的传导速度、幅度和动作电位阈强度。结果：与对照组相比,高剂量组的神经干动作电位的传导速度显著减慢（P<0.01）,中、高剂量组的幅度显著降低（P<0.01）,高剂量组的动作电位阈强度显著增大（P<0.01）。结论：动作电位传导速度、幅度与青风藤剂量呈负相关,动作电位阈强度与青风藤剂量呈正相关。青风藤水煎液降低坐骨神经的兴奋性,阻滞动作电位的传导,可能发挥抑制坐骨神经痛的作用。     

中药大血藤化学成分和药理活性的研究进展

本文就近年来国内外对传统中药大血藤的研究情况进行综述,主要概述了其化学成分、药理作用及临床应用的进展情况。     

影响鸡血藤药材活性物质成分及其质量的贮藏方法

贮藏是中药材流通过程中的一个重要环节,不当的包装方法会对商品鸡血藤药材的质量产生影响。采用无包装、塑料编织袋、铝箔密封袋、铝箔真空袋四种包装方法对鸡血藤药材进行贮藏,在贮藏18个月、24个月、30个月和36个月时分别测定药材含水量、总灰分、总多糖、总黄酮、芒柄花素以及真菌毒素黄曲霉毒素和呕吐毒素的含量。研究结果表明,四种包装方法下鸡血藤药材含水量、总灰分无显著差异,检测结果均符合2020年版《中华人民共和国药典》。四种包装方法贮藏的鸡血藤药材总多糖和总黄酮含量差异不大,但芒柄花素和真菌毒素差异显著,其中使用塑料编织袋包装的鸡血藤药材中芒柄花素含量相对比较稳定,而其它三种包装方法鸡血藤药材中芒柄花素含量随贮藏时间波动较大。此外,铝箔密封袋和铝箔真空袋包装所产生的黄曲霉毒素含量要显著高于塑料编织袋,其中用铝箔密封袋包装贮藏36个月时,鸡血藤药材中黄曲霉毒素含量高达19.95 μg/kg,远高于2020年版《中华人民共和国药典》限量标准。因此,基于药材活性成分稳定性、药材安全性以及经济成本,目前塑料编织袋包装方法更适合鸡血藤药材的贮藏。