前列安通胶囊质量标准研究

目的制订前列安通胶囊简便、快捷的质量标准。方法在同一块薄层板上鉴别黄柏、赤芍药和丹参。采用反相高效液相法,以乙腈-甲醇-0.1%磷酸(17∶13∶70)和乙腈-甲醇-甲酸-水(10∶30∶1∶59)为流动相,分别测定了样品中盐酸小檗碱和丹酚酸B的含量。结果盐酸小檗碱进样量在0.025 2～0.252 0μg(r=0.999 999)、丹酚酸B进样量在0.108 6～1.629μg(r=0.999 99)分别与峰面积呈良好的线性关系。盐酸小檗碱与丹酚酸B平均回收率分别为99.60%、99.12%,RSD分别为0.69%、0.48%。薄层色谱图鉴别阴性无干扰。结论该质量标准可快速控制前列安通胶囊质量。     

远志-厚朴配伍对厚朴酚、和厚朴酚胃肠代谢的影响

目的: 研究远志配厚朴对大鼠在胃液-肠液-血浆中不同时间厚朴酚、和厚朴酚含量的影响。 方法: 利用甲醇沉淀蛋白处理胃、肠液及血浆样品,采用HPLC测定,色谱条件为Synergi Hydro-RP C₁₈色谱柱(4.6 mm×250 mm,5 μm),乙腈-水(51:49)为流动相,流速1 mL·min^-1,检测波长294 nm,柱温30 ℃。 结果: 厚朴组及远志配厚朴组大鼠胃肠液中均测得厚朴酚与和厚朴酚,且配伍组各时间点胃液中的酚类物质含量明显高于单味厚朴组;给药150～480 min时段肠液中的含量高于厚朴组;血浆中仅测得和厚朴酚,配伍组于给药60～480 min时段血浆中和厚朴酚含量高于厚朴组,并有推迟吸收趋势。 结论: 远志配伍厚朴后,可能因远志的助溶效应使胃肠液中的厚朴酚与和厚朴酚含量增加,从而发挥缓解远志胃肠动力障碍作用。首次采用此法,对厚朴缓解远志胃肠动力障碍的胃肠吸收机制开展了探索性研究,具有一定新意。     

白头翁制剂胶体溶液对耐药解脲脲原体的体外抑制作用

目的探讨白头翁制剂胶体溶液对耐药解脲脲原体的抑菌作用。方法制备白头翁制剂胶体溶液,选用20株耐四环素解脲脲原体临床分离株,以微量肉汤稀释法测定对解脲脲原体耐药株的最低抑菌浓度。结果白头翁制剂胶体溶液(1.0mg/mL)最低抑菌浓度为(0.08±0.07)mg/mL,与阴性对照组比较差异有显著性(P<0.05)。结论白头翁制剂胶体溶液对耐药解脲脲原体有明显的抑制作用。     

基于“单味药-药对-复方”多层次的四逆散抗抑郁作用研究进展

抑郁症是临床上一种病因病机相当复杂的精神类疾病。随着现代社会生活节奏的加快以及生活压力的增大,抑郁症的发病率逐年增长。针对抑郁症,目前临床上常见的是应用五羟色胺再摄取抑制剂类（SSRI）或三环类抗抑郁西药,但因其不良反应大,治疗缓慢且治愈率低,从而不能长期使用。四逆散是临床常用的治疗抑郁症的方剂,始载于张仲景的《伤寒论》,为现代治疗抑郁症的基础方。该文就四逆散中柴胡和白芍单味药,柴胡-白芍药对,以及四逆散复方的抗抑郁作用展开综述,为今后中药复方的研究提供方向和思路。     

RP-HPLC测定西洋生晒参和西洋红参中人参皂苷含量

 目的RP-HPLC测定西洋生晒参和西洋红参中人参皂苷含量。方法利用Agilent 1100 Series高效液相色谱仪进行测定。色谱柱为德国Nudeosil-C₁₈(4·6mm×150mm,5μm);流动相为乙腈-水梯度洗脱,流速为1.5mL·min^-1;检测波长203nm。结果西洋生晒参和西洋红参均含有较高的人参皂苷Rb1,Re,与西洋生晒参比较,西洋红参在保留时间27～28min处的Re,51min的Rb1及64min处的一未知化合物的含量均有明显变化,此点在以往的西洋红参研究中鲜见报道。结论本方法简便可靠、快速、重现性好,适用于西洋生晒参和西洋红参中人参皂苷含量测定,为进一步研究西洋红参的成分及其药理作用提供了参考数据。     

云南赤芍抗乙型肝炎病毒的体外实验研究

目的:初步研究云南赤芍的抗乙型肝炎病毒(HBV)作用。方法:通过云南赤芍作用于体外培养的2.2.15细胞,观察其对2.2.15细胞两抗原分泌的影响.初步评价其抗HBV作用。结果:云南赤芍作用于2.2.15细胞12d后,药物对2.2.15细胞的半数毒性浓度为3.85g／L,对HBsAg、HBeAg的半数抑制浓度分别为<0.156g／L、0.54g／L,治疗指数分别为>24.68、7.13。结论:云南赤芍在体外细胞培养中对两抗原的分泌有较好的抑制作用。     

A Study on the Effect of Ethanol Extract of Radix Rhapontici on Erythrocyte Immune Function in Rats

This paper mainly studied the effect of ethanol extract of Radix rhapontici on erythrocyte immune function in SD rats with acute blood stasis. The methods used the effect on erythrocyte immune function. After intragastric administration of suspension of ethanol extract of Radix rhapontici to SD rats for 3 weeks, on the 21st day from intragastric administration, SD rats were made into blood stasis model and bloods were collected to determine the C3b, C3bRR, RFIR, and RFER in erythrocyte immune function. Meanwhile, serum total antioxidant activity (TAA), superoxide dismutase (SOD) activity, and serum malondialdehyde (MDA) level of rats were determined, and experimental results were analysed with analysis of variance and Q test. The results showed that the ethanol extract of Radix rhapontici had a very good effect on enhancement of erythrocyte immune function in SD rats.     

Delivery of radix ophiopogonis polysaccharide via sucrose acetate isobutyrate-based in situ forming systems alone or combined with its mono-PEGylation

This work aimed to achieve long-lasting delivery of radix ophiopogonis polysaccharide (ROP) by sucrose acetate isobutyrate (SAIB)-based in situ forming systems (ISFSs) alone or combined with mono-PEGylation of ROP. When the ‘90%SAIB/10% solvent’ system was used, the mean residence time (MRT) of ROP was prolonged by 4.3 5?～?7.00 times and the initial release rate was reduced significantly. However, this system was only suitable for days-long sustained release of ROP in short-term therapy. As to the ‘SAIB/additives/solvent’ system containing mono-PEGylated ROP, the results indicated that SAIB/poly(d,l-lactide-co-glycolide) (PLGA)/N-methyl-2-pyrrolidone (NMP) was superior to SAIB/polylactic acid (PLA)/NMP and SAIB/PLA/ethanol in controlled release. Moreover, weeks- to months-long (16–60 d) smooth release of ROP could be achieved by varying the concentration (10–30%) and molecular weight (MW) of PLGA (10–50?kDa) or by employing a moderate MW of PEGylated ROP (～20 or ～30?kDa). With further increasing the conjugate MW to ～40?kDa, the contribution of drug elimination to its plasma retention seemed to surpass that of the SAIB-based system, resulting in that the system no longer had an obvious influence on the in vivo behavior of the conjugate. Besides, the results of host response confirmed that with less solvent being used, the SAIB-based systems showed a higher biocompatibility than the PLGA-based systems, suggesting that they could be freely chosen in the prevention and/or cure of chronic diseases.     

Phytochemical characterization,antioxidant potential,and health risk assessment of Radix Oryzae Glutinosae

Radix Oryzae Glutinosae (ROG) has been used as a traditional anhidrotic agent in China. Ten samples were systematically assessed based on four aspects of their chemical profiles and antioxidant activity. The former was achieved using ultraviolet-visible spectra (UV), infrared absorption spectra (IR), proton nuclear magnetic resonance spectroscopy (¹H NMR), and inductively coupled plasma-mass spectrometry (ICP-MS) fingerprints, and antioxidant activity was assessed using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay, the 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) assay, and the ferric reducing antioxidant power (FRAP) assay. The presence of amino acids, flavonoids, organic acids, and sugars was indicated in all samples. A hierarchical cluster analysis and a canonical discriminant analysis were introduced to interpret the results of the multi-pattern fingerprint. The results of the correlations between the individual elements and between each element with the different types of metabolites displayed many interesting patterns. In vitro studies revealed that all samples displayed antioxidant activities. A pollution status examination and heavy metal evaluation of the ROG samples were performed. The human health risk assessment associated with the intake of potentially harmful elements in herbs was calculated in terms of the estimated daily intake, the target hazard quotient, and the lifetime cancer risk. The Nemerow multi-factor pollution index results suggested that all samples belonged to the serious pollution level. The results of the noncarcinogenic risk assessment study indicated that the pattern of consumption of this herb in China seems to suggest an excessive health hazard associated with some toxic elements studied. The carcinogenic risk results suggested that there is a potential risk due to As, Cr, Cd, and Ni for consumers, and these may contribute to the population cancer burden through ROG ingestion. This study provides insights into the organic medicinal constituents and the trace elements of the herb. The results will enable this herb to be used more effectively and safely.