HPLC法测定浓缩当归丸中阿魏酸的含量

建立了浓缩当归丸中阿魏酸的HPLC测定方法.采用C18色谱柱(TSK-GEL,4.6×150 mm,5μm),以甲醇-水-磷酸(30∶70∶0.3,V/V/V)为流动相,流速1.0 mL/min,检测波长320 nm.结果阿魏酸在0.006~0.15μg范围内线性关系良好,r为0.9999,平均加样回收率为96.91%.本方法可用于浓缩当归丸中阿魏酸的含量监控.     

乌鸡白凤丸及乌骨鸡、土鸡中微量元素的分析

采用原子吸收法分析了乌鸡白凤丸，泰和乌骨鸡和土鸡的某些无机元素含量并进行了对照研究。结果表明，乌鸡白凤丸的南方方中无机元素含量比北方方丰富，有更好的养血，补血功效，但北方方也有其特点。     

LC-DAD-APCI-MS-based screening and analysis of the absorption and metabolite components in plasma from a rabbit administered an oral solution of danggui

A valid chromatographic fingerprint method using liquid chromatography-diode array detection-atmospheric pressure chemical ionization mass spectrometry in negative mode (LC-DAD-APCI-MS) is proposed for studying the absorption and metabolites of a traditional Chinese medicine (TCM) Angelica sinensis (danggui) in rabbit plasma, after the rabbit is administered with danggui oral solution (DOS). More than thirty-two common components were detected in both DOS and rabbit plasma, which shows that the components in the DOS were absorbed into the body of the rabbit. Of these, senkyunolide I, senkyunolide H, Z-6,7-epoxyligustilide, 3-butylidene-7-hydroxyphthalide, Z-ligustilide, Z-butylidenephthalide, Diels-Alder dimers of ligustilide, linolenic acid, linoleic acid and falcarindiol were tentatively identified from their MS, UV spectra and retention behavior by comparing the results with the published literature. At least ten components were found in rabbit plasma but not in DOS, indicating that these components must be metabolites of some of the components in the original extract. The results prove that the proposed method can be used to rapidly analyze multiple constituents in TCMs, and to screen for bioactive compounds by comparing and contrasting the chromatographic fingerprints of DOS and plasma samples.     

黄柏生物碱成分在二妙丸类方中保护尿酸盐致人血管内皮细胞损伤作用及其配伍变化的研究

研究对二妙丸类方(二妙丸、三妙丸、四妙丸和加味四妙丸)起重要作用的基本方二妙丸的物质基础及其配伍变化. 正交组合二妙丸类方组方药有效部位, 四氮唑盐(MTT)法评价优选出对保护尿酸钠结晶(MSU)致人血管内皮细胞(HUVEC)损伤起重要作用的二妙丸黄柏生物碱部位, HPLC/DVD法建立黄柏生物碱部位指纹图谱, HPLC-ESI-MS/MS分析共有峰成分, 鉴定了12个生物碱成分, 并比较了二妙丸类方有效部位群HPLC/DVD指纹图谱配伍类方前后黄柏生物碱共有峰相对峰面积比值的变化. 结果表明, 黄柏生物碱配伍二妙丸及其类方后总相对含量分别为122.9%, 80.7%, 60.2%和94.2%, 小檗碱、巴马汀等重要生物碱也呈现较大的变化趋势, 茵芋碱、5-羟基小檗碱和四氢巴马汀等成分配伍二妙丸类方后消失. 研究显示, 基本方二妙丸中的黄柏生物碱是二妙丸类方中保护HUVEC起重要作用的物质基础, 其相对含量变化与配伍类方后的功效变化一致.     

参茸黑锡丸中微量元素的测定

参茸黑锡丸是地道的江西传统名方 ,该药在临床上主要用于厥脱治疗 ,主要功能为回阳固脱。文章采用原子吸收法对中成药参茸黑锡丸等 6种中成药中 4种微量元素进行了测定。并将参茸黑锡丸中微量元素与其他 5种中成药中微量元素进行对照研究 ,结果表明 ,参茸黑锡丸中含有丰富的微量元素 ,而有毒的Hg,Cd微量元素含量都较低 ,能保证药品的使用安全     

Danggui Buxue Decoction: Comparative pharmacokinetic research on six bio-active components in different states by ultra-performance liquid chromatography-tandem mass spectrometry after oral administration

Danggui Buxue Decoction is a classic formula containing Astragali Radix and Angelicae Sinensis Radix in a 5:1 ratio and has been extensively used to treat blood deficiency for thousands of years. The aim of the study was to investigate the differences in plasma protein binding, pharmacokinetics, and tissue distribution of Danggui Buxue Decoction in normal and blood-deficient rats by ultra-performance liquid chromatography-tandem mass spectrometry. The effects on peripheral blood routine were verified. The compounds exhibited higher plasma protein binding and absorption in the model group compared to the control group, except formononetin. The six ingredients were distributed widely, and the highest concentrations were detected in the heart and uterus. As has been demonstrated in the previous study of the effect of Danggui Buxue Decoction, its potential is to serve as an effective traditional Chinese medicine formula for treating cardiovascular diseases and impacting estrogenic properties, which reveals the potential target organs of Danggui Buxue Decoction the heart and uterus. Our findings suggested that the absorption and distribution of different components in Danggui Buxue Decoction varies depending on the pathological state, molecular weight, lipid solubility, transporter-mediated efflux, and other factors.     

Study on the dynamic metabolic characteristic of main active ingredients in Danggui Buxue Decoction by liquid chromatography-tandem mass spectrometry based on in situ sequential metabolism strategy

Danggui Buxue Decoction is a classic formula for replenishing qi and nourishing blood. Despite its widespread use, its dynamic metabolism involved remains unclear. Based on the sequential metabolism strategy, blood samples from different metabolic sites were obtained via in situ closed intestine ring integrated with a jugular venous continuous blood supply technique. An ultra-high-performance liquid chromatography-linear triple quadruple-Orbitrap-tandem mass spectrometry method was developed for the identification of prototypes and metabolites in rat plasma. The dynamic absorption and metabolic landscape of flavonoids, saponins, and phthalides were characterized. Flavonoids could be deglycosylated, deacetylated, demethylated, dehydroxylated, and glucuronicated in the gut and then absorbed for further metabolism. Jejunum is an important metabolic site for saponins biotransformation. Saponins that are substituted by Acetyl groups tend to lose their acetyl groups and convert to Astragaloside IV in the jejunum. Phthalides could be hydroxylated and glucuronidated in the gut and then absorbed for further metabolism. Seven components serve as crucial joints in the metabolic network and are potential candidates for the quality control of Danggui Buxue Decoction. The sequential metabolism strategy described in this study could be useful for characterizing the metabolic pathways of Chinese medicine and natural products in the digestive system.