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1.
河北道地药材黄芩指纹图谱的研究   总被引:2,自引:0,他引:2  
目的:建立河北道地药材热河黄芩的 HPLC 指纹图谱,得到对照图谱,并与不同产地黄芩药材指纹特征相比较,为科学评价与有效控制黄芩质量提供新方法。方法:采用 HPLC 法测定了热河黄芩等26个不同产地黄芩样品。色谱条件:C~(18)柱(250mm×4.6mm,5μm),乙腈-0.25%磷酸溶液-四氢呋喃为流动相进行梯度洗脱,检测波长274nm,流速1mL·min~(-1),柱温30℃。结果:建立了 HPLC 指纹图谱共有模式,并对不同产地药材进行了相似度比较。结论:色谱指纹图谱分析法能简便、快速地鉴别和区分不同来源的黄芩药材,为全面控制黄芩药材的质量提供了依据。  相似文献   

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目的 建立杜仲药材高效液相色谱(HPLC)的指纹图谱,评价不同产地杜仲中化学成分的差异,为制定杜仲的质量控制标准提供参考.方法 色谱柱为Phenomenex Synergi Hydro-RP C18(250 mm×4.6 mm,4μm),流动相为甲醇-0.05%磷酸溶液(梯度洗脱),检测波长235 nm,柱温25℃.利用中药色谱指纹图谱相似度评价系统软件进行相似度计算,并应用聚类分析与主成分分析对指纹图谱进行化学模式识别法研究.结果 建立了杜仲药材的指纹图谱,确定了19个共有峰,并用对照品指认了3个峰.相似度评价表明,20批不同产地的杜仲药材相似度存在差异;聚类分析将20个样品分成A与B两类.结论 杜仲药材指纹图谱的建立为杜仲的质量控制评价体系提供了科学依据.  相似文献   

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目的:以不同产地的黑草为研究对象,建立黑草药材的HPLC指纹图谱,为科学评价和有效控制黑草药材的质量提供科学依据。方法:以木犀草素成分为参照峰,采用HPLC法建立黑草药材的指纹图谱;色谱柱:Agilent Extend-C18(250 mm×4.6mm,5μm),流动相:乙腈与0.7%冰醋酸,梯度洗脱;流速:1.0 mL·min-1;检测波长:350 nm;柱温:35℃;进样量:10μL。结果:10批次黑草药材中共有12个指纹图谱峰,经相似度计算,整体相似性好。结论:本文建立的指纹图谱有较强的针对性,为黑草药材的研究以及制定黑草药材的质量控制标准提供科学依据。  相似文献   

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《中南药学》2017,(8):1025-1028
目的建立不同产地夏枯草药材的指纹图谱,为夏枯草药材的质量控制提供依据。方法色谱柱:Agilent 5HC-C_(18)(250 mm×4.6 mm,5μm);流动相:乙腈(A)-0.1%磷酸水溶液(B),梯度洗脱;流速:1.0 mL·min~(-1);检测波长:210 nm;柱温:30℃。结果建立了夏枯草药材的指纹图谱,标示了18个共有峰。16批药材中,有14批药材指纹图谱与对照图谱相似度达到0.88以上,表明大多数产地的夏枯草药材质量一致性较好。结论该方法稳定、可靠、重复性好,可以有效地用于夏枯草药材的质量控制。  相似文献   

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目的建立鸦胆子药材水溶性成分指纹图谱检测方法。方法采用汉邦BDS-C18色谱柱(250 mm×4.6 mm,5μm),用反相色谱法进行分离,以乙腈-磷酸水溶液(pH 3.0)进行线性梯度洗脱,检测波长:280 nm,柱温:40℃,进样量:10μL。以没食子酸峰作为内参照峰。结果测定20批不同产地的鸦胆子药材,共标定11个共有峰。通过中药色谱指纹图谱相似度评价系统(2009年版)进行评价,20批鸦胆子药材水溶性指纹图谱之间相似度均在0.95以上。易伪品女贞子水溶性成分与鸦胆子水溶性成分共有模式相似度为0.562。结论建立的指纹图谱检测方法可为鉴别鸦胆子药材真伪和药材质量控制提供试验依据。  相似文献   

6.
目的采用双波长HPLC法建立栀子药材指纹图谱。方法采用Waters Symmetry C_(18)(250mm×4.6mm,5"m)色谱柱;乙腈-水梯度洗脱;流速:0.8mL·min~(-1);柱温:30℃。结果以栀子苷为参照物,用HPLC法测定不同产地10批栀子药材的指纹图谱,分离度达到1.5,用中药色谱指纹图谱相似度评价系统,计算出10批栀子指纹图谱的相似度,均在0.940~1.000。结论该方法具有良好的精密度、稳定性和重复性,可更好地控制栀子药材的内在质量。  相似文献   

7.
石榴皮药材HPLC指纹图谱研究   总被引:2,自引:2,他引:2  
周本宏  吴玥  王慧媛  刘敏  黄付伟  张杰  胡先明 《中国药房》2008,19(30):2351-2353
目的:建立石榴皮药材的高效液相色谱(HPLC)指纹图谱,考察不同产地石榴皮药材的质量。方法:色谱柱为Kromasil C18,流动相为乙腈-磷酸缓冲盐(含0.1%三乙胺)-水,流速为1mL·min-1,柱温为25℃,检测波长为240nm;不同样品之间的相似度根据《中药色谱指纹图谱相似度评价系统研究版(2004A)》计算。结果:确定由12个峰构成石榴皮药材的指纹特征,不同产地的药材均具有这些特征,但是特征峰的相对含量分布差异使指纹图谱的概貌存在一定的差异。药材指纹图谱的相似度大小与产地有一定的关系。结论:本方法精密度高、重现性好,可为石榴皮药材的质量评价提供参考。  相似文献   

8.
目的对黄芩药材及其炮制品黄芩片进行HPLC指纹图谱研究。方法选择HPLC-UV指纹图谱。色谱条件:Hypersil C18柱(200mm×5.0mm,5μm);流动相为甲醇-0.4%磷酸水溶液-乙腈线性梯度洗脱;流速:1.0mL·min^-1;柱温28℃;检测波长277nm。结果10批不同产地正品黄芩进行规范炮制加工后得到的黄芩片指纹图谱无明显差异,14个不同产地黄芩药材的指纹图谱也具有极高的相似度。结论该方法重复性好,可为黄芩药材及其饮片的质量控制提供科学依据。  相似文献   

9.
续断的HPLC指纹图谱研究   总被引:1,自引:0,他引:1  
朱净民  李隆云  马鹏  秦剑  向丽  张雪 《中国药房》2012,(11):1012-1014
目的:建立续断的高效液相色谱(HPLC)指纹图谱,并对不同产地续断的指纹特征进行比较,为其质量评价提供新的方法。方法:采用HPLC法测定了19批不同产地的续断样品,色谱柱为Ultimate XB-C1(8250mm×4.6mm,5μm),流动相为乙腈-0.05%磷酸水(梯度洗脱),柱温为25℃,流速为1mL·min-1,检测波长为212nm。并对不同产地样品的相似度进行了比较。结果:利用《中药色谱指纹图谱相似度评价系统(2004A版)》建立了续断药材的指纹图谱共有模式,标出了21个特征峰。除了10号样品,其他18批样品的相似度均较高。结论:本方法具有较好的重复性、精密度、稳定性,可为续断的质量控制提供科学依据。  相似文献   

10.
目的:研究不同产地射干药材的HPLC指纹图谱,为控制射干药材质量提供依据.方法:采用Agilent Zorbax SB-C18色谱柱(4.6 mm×250 mm,5 μm);乙腈-0.4%冰醋酸水溶液为流动相,梯度洗脱;流速1 mL·min-1;检测波长269 nm.结果:15个不同产地射干药材的指纹图谱有14个共有峰,通过与对照品的保留时间比较,确定了其中7个峰.结论:虽然不同产地药材指纹图谱具有一定差异,HPLC指纹图谱仍可以用作射干药材的质量控制.  相似文献   

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This study describes a new approach for organophosphorous (OP) antidotal treatment by encapsulating an OP hydrolyzing enzyme, OPA anhydrolase (OPAA), within sterically stabilized liposomes. The recombinant OPAA enzyme was derived from Alteromonas strain JD6. It has broad substrate specificity to a wide range of OP compounds: DFP and the nerve agents, soman and sarin. Liposomes encapsulating OPAA (SL)* were made by mechanical dispersion method. Hydrolysis of DFP by (SL)* was measured by following an increase of fluoride ion concentration using a fluoride ion selective electrode. OPAA entrapped in the carrier liposomes rapidly hydrolyze DFP, with the rate of DFP hydrolysis directly proportional to the amount of (SL)* added to the solution. Liposomal carriers containing no enzyme did not hydrolyze DFP. The reaction was linear and the rate of hydrolysis was first order in the substrate. This enzyme carrier system serves as a biodegradable protective environment for the recombinant OP-metabolizing enzyme, OPAA, resulting in prolongation of enzymatic concentration in the body. These studies suggest that the protection of OP intoxication can be strikingly enhanced by adding OPAA encapsulated within (SL)* to pralidoxime and atropine.  相似文献   

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In order to find out the values of the steroid resources for the future use. the compositions and contents of steroidal sapogenins from 13 domestic plants have been investigated. As a result,Dioscorea nipponica, D. quinqueloba andSmilax china were found to have large amount of diosgenin. And pennogenin inTrillium kamtschaticum andParis verticillata, yuccagenin inAllium fistulosum, hecogenin inAgave americana and neochlorogenin inSolanum nigum were appeared to be major steroidal sapogenins.  相似文献   

15.
Clinical and in vitro investigations were carried out to test the efficacy of gut lavage, hemodialysis, and hemoperfusion in the treatment of poisoning with paraquat or diquat. In a patient suffering from diquat intoxication 130 times more diquat was removed by gut lavage 30 h after ingestion than was removed by complete aspiration of the gastric contents.Determination of in vitro clearances for paraquat and diquat by hemodialysis showed that, at serum concentrations of 1–2 ppm, such as are frequently encountered in poisoning in man, toxicologically relevant quantities of herbicide cannot be removed from the body. At a concentration of 20 ppm, on the other hand, hemodialysis proved to be effective, the clearance being 70 ml/min at a blood flow rate of 100 ml/min. The efficacy of hemoperfusion with coated activated charcoal was on the whole better. Especially at concentrations around 1–2 ppm, the clearance values for hemoperfusion were some 5–7 times higher than those for hemodialysis.In a patient suffering from paraquat poisoning, both hemodialysis as well as hemoperfusion were carried out. The in vitro results could be confirmed: At serum concentrations of paraquat less than 1 ppm no clearance could be obtained by hemodialysis while by hemoperfusion with activated charcoal quite high clearance values were measured and the serum level dropped down to zero.
Zusammenfassung Klinische Untersuchungen und Laboratoriumsversuche wurden durchgeführt, um die Wirksamkeit von Darmspülung, Hämodialyse und Hämoperfusion bei Paraquat- und Deiquat-Vergiftungen zu prüfen.Bei einem Patienten wurde 30 Std nach Deiquat-Aufnahme durch Darmspülung 130mal mehr Deiquat entfernt als durch vollständige Aspiration des Mageninhaltes. In vitro-Versuche ergaben, daß bei Blutserumkonzentrationen von 1–2 ppm, die bei Vergiftungen oft gemessen werden, durch Hämodialyse keine toxikologisch relevanten Paraquat- oder Deiquat-Mengen entfernt werden können. Dagegen erwies sich die Hämodialyse bei 20 ppm und einer Blutumlaufgeschwindigkeit von 100 ml/min mit einer Clearance von 70 ml/min als wirksam. Die Hämoperfusion mit beschicheter Aktivkohle war in diesen Versuchen aber eindeutig überlegen, denn insbesondere bei Konzentrationen um 1–2 ppm waren die Clearance-Werte 5–7mal höher als bei der Hämodialyse.Die in vitro-Ergebnisse wurden bei einem Patienten mit einer Paraquat-Vergiftung bestätigt: Bei Konzentrationen unter 1 ppm war die Hämodialyse wirkungslos, während durch Hämoperfusion relativ hohe Clearance-Werte erreicht wurden, so daß der Serumspiegel rasch unter die Nachweisgrenze abfiel.
  相似文献   

16.
Zusammenfassung Mittels Gaschromatographie und Dünschichtchromatographie wiesen die Autoren 11 Substanzen nach, welche durch Injektion oder nach Verabreichung per os in die Kniegelenksynovialflüssigkeit eindrangen. In ihrer Aufstellung konnten sie eine direkte Beziehung zwischen Struktur sowie chemischphysikalischen Eigenschaften der Substanz und ihrer Fähigkeit, aus dem Blut in die Kniegelenksynovialflüssigkeit einzudringen, nicht nachweisen, außer der Tatsache, daß Substanzen mit starker Affinität zu Eiweißstoffen erst in höheren Dosen nachweisbar waren.  相似文献   

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This article assesses pain within the context of the dose response. A substantial number of studies indicate that the dose response for pain-related endpoints is commonly biphasic, being independent of the type of biological model employed, endpoint measured, or agent tested. The quantitative features of the dose response are also remarkably consistent regardless of the receptor pathway that mediates the nociceptive response, indicating a likely downstream message convergence. These findings have important implications for drug discovery, development, and clinical evaluation.  相似文献   

20.
The current USP National Formulary contains 65 Monographs for drug formulations containing neomycin. All 65 Monographs prescribe a bioassay for neomycin assay. This bioassay, based on cell culture, is labor intensive, has poor precision, and cannot be adapted for purity or identification. High-performance anion-exchange chromatography with integrated pulsed amperometric detection (HPAE-IPAD), a liquid chromatography technique, has been shown to be suitable for neomycin purity analysis and neomycin assay of an over-the-counter first aid cream (Hanko and Rohrer [17]). Here we propose that an HPAE-IPAD assay can replace the bioassay in the 65 neomycin-containing Monographs. We applied the HPAE-IPAD assay to four neomycin-containing drug products representing the four classes of formulations found in the 65 Monographs, liquid, solid, suspension, and cream. Each drug was analyzed with two chromatography systems, and on 3 separate days. For all products, HPAE-IPAD measurements were precise and accurate with respect to the label concentrations. There was also high accuracy for spike recovery of neomycin from the four drug products throughout 70–150% of the labeled concentration. These results suggest that an HPAE-IPAD assay would be an accurate assay for neomycin, and would be faster and more precise than the current bioassay.  相似文献   

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