RP-HPLC法同时测定蛇床子中蛇床子秦、欧芹属素乙和异茴芹素的含量

目的建立蛇床子Cnidium monnieri中蛇床子素(osthole)、欧芹属素乙(imperatorin)和异茴芹素(isopimpinellin)的高效液相色谱测定方法。方法采用Vercopark Inertsil N-5ODS柱，1％醋酸-甲醇(梯度为0～30min 1％醋酸95％～5％)为流动相，检测波长254nm。结果该法回收率蛇床子素为99．1％，欧芹属素乙为95.8％，异茴芹素为97.3％；RSD蛇床子素为1．8％，欧芹属素乙为0．8％，异茴芹素为3．3％(n=5)。结论本方法为蛇床子药材、蛇床子提取物及含蛇床子药材的复方的质量评估提供了可靠的依据。     

蛇床子配方颗粒HPLC指纹图谱研究及6种香豆素类成分含量测定

目的建立蛇床子配方颗粒HPLC指纹图谱及花椒毒酚、花椒毒素、异茴芹素、佛手柑内酯、欧前胡素和蛇床子素6种香豆素类成分含量测定方法,为蛇床子配方颗粒物质基准的研究提供参考。方法采用HPLC法,色谱柱为Waters XBridge C_(18)(250 mm×4.6 mm,5μm),甲醇-0.1%醋酸水溶液为流动相,梯度洗脱;体积流量为0.5 mL/min,进样量为10μL,柱温40℃。蛇床子配方颗粒HPLC指纹图谱及花椒毒酚、花椒毒素、异茴芹素、佛手柑内酯、欧前胡素、蛇床子素含量测定的检测波长为320 nm。采用国家药典委员会出版的"中药色谱指纹图谱相似度评价系统"(2012版),建立蛇床子配方颗粒指纹图谱,并使用HPLC法同时测定6种香豆素成分含量。结果对18批蛇床子配方颗粒进行了研究,其指纹图谱相似度均≥0.992,标定了19个共有峰,各峰分离度较好。含量测定结果表明花椒毒素与蛇床子素为蛇床子配方颗粒中含量较高的香豆素类成分。经方法学考察,方法精密度RSD值均小于1.6%,方法的重复性良好,样品在48 h内稳定;花椒毒酚、花椒毒素、欧前胡素、异茴芹素、佛手柑内酯和蛇床子素的加样回收率分别为100.69%、101.03%、99.48%、100.88%、101.27%、100.35%,RSD均小于2.5%;6种成分在一定质量浓度内线性关系良好;18批蛇床子配方颗粒中花椒毒酚、花椒毒素、异茴芹素、佛手柑内酯、欧前胡素、蛇床子素的质量分数依次为8.01～8.29、2.37～2.63、4.30～4.61、4.04～4.40、3.45～3.90、6.02～6.80 mg/g。结论建立了蛇床子配方颗粒的指纹图谱及同时测定其6种主要香豆素类成分含量的方法,操作简便,结果稳定、准确,对建立蛇床子配方颗粒的质量控制标准提供了依据,具有重要的应用价值。     

RP-HPLC法同时测定复方独活吲哚美辛胶囊中蛇床子素和异欧前胡素的含量

目的:建立RP-HPLC法同时测定复方独活吲哚美辛胶囊中蛇床子素和异欧前胡素含量的新方法。方法:采用Agilent Eclipse XDB-C18(4.6mm×250mm,5μm)色谱柱,以乙腈-0.05mol.L-1醋酸溶液为流动相,流速1.00ml.min-1,柱温:35℃,检测波长310nm,以外标法峰面积定量。结果:异欧前胡素与蛇床子素、阴性样品分离良好,蛇床子素线性范围27.1～542.5μg,r=1.0000;异欧前胡素线性范围36.5～729.5μg,r=1.0000;样品溶液在24小时内稳定,平均加样回收率蛇床子素为99.7%,RSD为0.94%,异欧前胡素为96.2%,RSD为0.65%。结论:该方法简便、快速,测定结果准确可靠,重现性好,可用于复方独活吲哚美辛胶囊的质量控制。     

复方蛇床子洗剂中蛇床子素的RP-HPLC测定

目的建立复方蛇床子洗剂中蛇床子素定量分析的RP-HPLC方法.方法选择醋酸甲地孕酮为定量内标物,采用Hypersu-ODS 2(200 mm×4.0 mm,5μm)色谱柱,流动相为0.01 mo1/L磷酸二氢钠-乙腈(5248),流速1.2 mL/min,检测波长320 nm.结果蛇床子素和内标在12 min之内实现理想分离.在0.123 8～2.970μg/mL范围内,蛇床子素与内标峰面积比与其相应浓度呈良好的线性关系(r＝0.999 6),方法平均回收率为(98.4±0.90)%,RSD为0.91%.结论本法操作简便快速,定量准确可靠,可用于复方蛇床子洗剂的质量控制.     

高效液相色谱法测定感冒一小时胶囊中异欧前胡素和蛇床子素的含量

目的 :采用反相高效液相色谱法对感冒一小时胶囊中羌活、独活的指标成分异欧前胡素、蛇床子素同时测定。方法 :采用HypersilC₁₈柱 ,流动相为乙腈水(425∶575) ,检测波长 320nm。结果 :线性范围异欧前胡素 0～03975 μg,蛇床子素 0～03825μg ,相关系数异欧前胡素 0.9999,蛇床子素 0.9997,平均回收率异欧前胡素98.1% ,蛇床子素 99.8%。结论 :方法简便、准确、灵敏可靠 ,适用于制剂及药材中异欧前胡素和蛇床子素的分析测定。     

HPLC法测定兔血浆中蛇床子素的含量

蛇床子素又名甲基欧芹酚 ( osthol,Ost) ,是从伞形科植物蛇床成熟果实中提取的香豆素。国产蛇床子主要含香豆素类 ,其中蛇床子素的含量最高 [1～ 2 ] 。蛇床子素具有抑制心脏、扩张血管、镇静、镇痛作用、对记忆的保持作用、抗诱变、抗癌作用等 [3～ 9]。蛇床子素的测定方法报道较多 ,但在组织中和血液中采用 HPLC法测定蛇床子素的浓度方法未见报道。本实验以丹皮酚为内标 ,建立了 HPLC法测定兔血浆样品中蛇床子素含量的分析方法 ,适用于该药品的临床监控、药动学和生物利用度研究。1　仪器与试药　　Agilent1 1 0 0高效液相色谱仪 (美…     

蛇床子药材及其胶囊制剂的质量标准研究

采用ＴＬＣ以蛇床子素、欧芹属素乙作为对照品鉴定蛇床子药材及其胶囊制剂；采用毛细管气相色谱法（内标法）测定蛇床子素含量，方法精密度试验（ＲＳＤ＝１．１６％），重现性试验（ＲＳＤ＝１．５８％），回收率试验（９９．７％），线性考察（ｒ＝０．９９９８）等，均符合药材及制剂质量标准要求。     

蛇床子素药理作用及相关机制研究进展

蛇床子属于伞形科植物蛇床的干燥成熟果实,为传统中药,临床上主要以外用为主,其主要化学成分为蛇床子素。蛇床子素又名甲氧基欧芹酚,是中药蛇床子的主要化学成分之一,也是蛇床子的主要药理活性成分,属于香豆素类化合物。目前研究已发现蛇床子素具有较强的药理学活性,对心脑血管系统、内分泌系统、免疫系统疾病等多种疾病均具有显著的治疗作用。     

气相色谱法测定蛇床子提取物中蛇床子素的含量

目的建立完善的气相色谱测定蛇床子素含量的方法。方法首先采用柱层析的方法对样品进行预处理,分离蛇床子提取物中的甘油三酯,并结合红外和核磁图谱验证;然后采用DB-5色谱柱,外标法测定蛇床子素的含量。结果经过预处理的样品在该条件下测定蛇床子素,线性范围好,r=0.999 7;回收率为97.97%~102.4%;RSD为1.09%(n=5)。结论该方法简便、准确度高,重现性好。     

蛇床子及其主要成分蛇床子素的抗过敏作用

研究发现蛇床子70％乙醇提取物及其中的2个香豆素衍生物蛇床子素、异茴香素均对化合物48/80诱导皮肤瘙痒有抑制作用,而不影响动物自发活动。本次采用鼠过敏模型研究蛇床子提取物(CM-ext)及其主要成分蛇床子素对与瘙痒相关的过敏反应的作用。     

丹参药材中铅、镉、砷、汞、铜的含量测定

[目的]对不同产地的丹参药材中铅、镉、砷、汞、铜的含量进行测定,为高品质丹参药材的筛选提供某种依据,并为中药材质量标准的建立提供一定的参考价值.[方法]样品经湿法消解后,用原子吸收分光光度法进行检测.[结果]超标率为:铅6.25%;镉100%;砷0;汞0;铜31.25%.[结论]不同产地的丹参药材中砷、汞含量较低,铅和铜的含量个别超标,镉含量严重超标.     

Antimicrobial, anti-inflammatory, antiparasitic, and cytotoxic activities of Galium mexicanum

Ethnopharmacological relevance

To study the potential benefit of the traditional Mexican medicinal plant Galium mexicanum Kunth (Rubiaceae). Hexane, chloroform, and methanol extracts as well as various fractions from these extracts were tested to determine antibacterial, antifungal, antiparasitic or anti-inflammatory activities in vitro.

Materials and methods

Aerial parts of the plant were extracted with various solvents and fractionated accordingly. Their antibacterial and antifungal activities were assessed on nine bacterial and four fungal strains. Leishmania donovani was used as a protozoan strain for antiparasitic activity. The anti-inflammatory activity of the compounds was investigated by measuring the secretion of interleukin-6 when macrophages were exposed to lipopolysaccharide.

Results

Various extracts and fractions obtained from this plant exhibit antibacterial, antifungal, antiparasitic, and anti-inflammatory activities. Of special interest was the hexane fraction HE 14b, which show antibacterial (ranging between 67 and 666 μg/ml) and antifungal (at concentrations of 333 μg/ml) activities. Also the hexane fraction HE 5 exhibited antiparasitic activity (at concentrations of 260 μg/ml), whereas the methanol fraction ME 13-15 showed a potent anti-inflammatory activity when compared to dexamethasone. Chemical analyses of the chloroform extract show the presence of triterpenes, saponins, flavonoids, sesquiterpene lactones, and glucosides, but no tannins were detected in the assayed extract.

Conclusions

The benefit of Galium mexicanum as a traditional medicinal plant was confirmed using antibacterial and antifungal assays in vitro. We also report for the first time, and to the best of our knowledge, antiparasitic and anti-inflammatory activities of this plant.     

Isolation and hypoglycemic activity of eleutherans A, B, C, D, E, F, and G: glycans of Eleutherococcus senticosus roots

Intraperitoneal injection of an aqueous extract of the crude drug "shigoka" (Siberian ginseng), Eleutherococcus senticosus roots, remarkably diminished plasma-sugar level in mice. Fractionation of the extract by monitoring the activity yielded seven glycans, eleutherans A, B, C, D, E, F, and G, which exerted marked hypoglycemic effects in normal and alloxan-induced hyperglycemic mice.     

反相高效液相色谱同时测定苦参碱、氧化苦参碱、槐果碱和槐胺碱的含量

目的 :建立同时测定苦参碱、氧化苦参碱、槐果碱和槐胺碱的 HPL C方法。方法 :用 VP-ODS150 mm× 4.6mm,5μm色谱柱 ,柱温 50℃ ,以甲醇 -水 -三乙胺 (55∶ 45∶ 0 .2 )为流动相 ,紫外检测波长 2 15nm,流速 0 .8ml/ min。结果 :在所确立的色谱条件下 4种生物碱得到很好地分离 ,标准曲线显示在 0 .1～ 0 .7μg范围内具有良好的线性关系 ,平均回收率为98.5%～ 10 1.0 %。结论 :该方法简便、快速、准确 ,可用于生药及制剂中苦参碱、氧化苦参碱、槐果碱和槐胺碱的同时测定     

电感耦合等离子质谱法测定热毒宁注射液中有害元素铅砷镉汞铜的含量

目的: 建立电感耦合等离子体质谱法(ICP-MS) 测定热毒宁注射液中铅(Pb),砷(As),镉(Cd),汞(Hg),铜(Cu)5 种元素同时的方法。 方法: 样品经微波消解后,以ICP-MS同时测定上述5种元素,其中Cu,As以铬(Ge)作为内标, Cd以铟(In)作为内标,Hg,Pb以铋(Bi)作为内标进行定量以改善基体效应和干扰。 结果: 各元素的检出限在0.009~0.113 μg ·L^-1; 各元素的线性关系良好,Pb,As,Cd,Cu,Hg线性范围分别为0~20,0~20,0~10,0~200,0~5 μg ·L^-1。r均≥ 0.999;精密度RSD<1.9%;重复性良好,回收率在97.8%~110.9%,RSD<4.3%。20批样品中5种元素的含量均符合规定。 结论: 该方法操作简便,分析速度快,灵敏度高,各项分析性能指标均达到要求,适用于热毒宁注射液中Pb,As,Cd,Hg,Cu元素的测定。     

Phytochemistry, Metabolism, and Metabolomics of Ginseng

Ginseng, as a medicinal plant, has been used for thousands of years in China, Korea, and Japan, and the study on ginseng is a hotspot in the research field as evidenced by about 7000 scientific papers in PUBMED. In recent decades, many ginseng studies focused on the metabolism and metabolomics of ginseng or its active ingredients using modern bioanalytical technologies. To date, more than 200 ginsenosides and non-saponin constituents have been isolated and identified. In the past decades, rapid development of analytical technologies has facilitated the advancement of ginseng research in many ways. In this review, we focus on the advances of ginseng research in chemistry, pharmacology, and metabolomics. We also provide the comments on the significance as well as challenges of metabolomics-based ginseng studies.     

Ethnobotanical survey of antidiarrhoeal plants of Parinche valley,Pune district,Maharashtra, India

Ethnopharmacological relevance

Maharashtra is the third largest state in India with a large tribal population. Documentation of traditional knowledge through ethnobotanical studies is important for conservation and utilization of indigenous knowledge. Diarrhoeal diseases are the second largest cause of morbidity in rural India. Medicinal plants given by the traditional healers of Parinche in Pune district, Maharashtra are known to be efficacious for many common ailments, including diarrhoeal diseases.

Aim of the study

Ethnobotanical survey of antidiarrhoeal plants from Parinche valley towards the documentation and conservation of traditional knowledge.

Materials and methods

Interviews and inquiries were conducted amongst traditional healers, indigenous communities and village elders.

Results

One hundred and eighty two plants used by tribes and natives for different ailments were documented of which 28 flowering plants were for diarrhoea. Leaf was the most preferred plant part. Amongst the 28 plants, antidiarrhoeal activity of five plants viz., Caesalpinia sepiaria, Dioscorea pentaphylla, Launaea pinnatifida, Syzygium rubicundum and Ziziphus jujuba has not been reported previously. Two species viz., Ziziphus xylopyra and Syzygium rubicundum are endemic to India.

Conclusion

Parinche valley is an ethnobotanically rich area with abundant availability and knowledge of medicinal plants that can serve as a model for low cost health care.     

血竭含药血清对雪旺氏细胞NGF,BDNF,CNTF,LNGFR,TrkA,GDNF,GAP-43和NF-H表达的影响

目的:观察血竭含药血清对雪旺氏细胞NGF,BDNF,CNTF,LNGFR,TrkA,GDNF,GAP43和NF-H表达的影响,探讨其促进周围神经再生的可能机制.方法:SD大鼠随机分为血竭给药组(灌服血竭的香油溶液)和空白对照组(等体积香油),制备血竭含药血清和空白对照血清.选取出生3 dSD大鼠双侧坐骨神经制备雪旺氏细胞;将培养的雪旺氏细胞分为血竭组和空白对照组,分别用10％血竭含药血清和空白对照血清干预培养.48 h后应用RT-PCR法检测各组雪旺氏细胞NGF,BDNF等基因mRNA表达水平.结果:镜下观察到大部分雪旺氏细胞呈双极梭形,细胞呈肩对肩或端对端排列,免疫细胞化学鉴定均呈阳性;与空白组比较,血竭组NGF,LNGFR,GDNF和GAP43 mRNA表达上调(P＜0.01),BDNF mRNA表达下调(P＜0.05),CNTF和TrkA的mRNA均下调(P＜0.01),NF-H mRNA无显著差异.结论:中药血竭可能是通过上调NGF,LNGFR,GDNF,GAP-43的mRNA的表达,同时下调BDNF,CNTF,TrkA mRNA来发挥其促进神经修复作用.     

从热毒湿瘀虚辨治小儿IgA肾病

IgA肾病病理机制复杂,热邪为IgA肾病诱发和加重的始动因素,湿毒内蕴是IgA肾病关键病机,瘀血为IgA肾病病理基础,气阴两虚为IgA肾病的根本病机。设立总治则为祛邪扶正,常用治疗方法有清热解毒、清热利湿、活血化瘀、益气养阴。