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1.
目的:建立HPLC法测定前列回春胶囊中淫羊藿苷的含量.方法:用Diamonsil C18色谱柱(200 mm×4.6 mm,5μm),流动相:乙腈-水(26:74),流速:1.0 ml·min-1,检测波长:270 nm.结果:淫羊藿苷在0.04~0.50μg范围内与峰面积线性关系良好,r=0.999 9,平均回收率为99.1%,RSD为1.0%(n=6).结论:方法简便,结果准确,可用于前列回春胶囊的质量控制.  相似文献   

2.
目的:建立高效液相色谱法测定前列回春胶囊中淫羊藿苷含量。方法:采用 Hypersil ODS2 C_(18)柱(4.6 mm×250 mm,5μm),以乙腈-水(25:75)为流动相,流速为1 mL·min~(-1),检测波长为270 nm。结果:淫羊藿苷进样量在0.39~3.88μg的范围内与峰面积呈良好的线性关系(r=0.9999),平均回收率为99.3%(RSD=1.1%,n=6)。结论:本方法简便、可靠、准确,可用于前列回春胶囊的质量控制。  相似文献   

3.
施华青  施芬 《海峡药学》2013,25(5):33-34
目的建立高效液相色谱法测定生力胶囊中淫羊藿苷的含量,为该药质量标准研究和完善提供依据。方法 HPLC法测定生力胶囊中淫羊藿苷含量,色谱柱:ZORBAX SB-C18柱(5μm,4.6mm×150mm)。流动相:乙腈-水-磷酸(28∶72∶1),柱温:35℃,检测波长为270nm,流速:1.0mL·min-1。结果淫羊藿苷浓度在7.024~70.24μg·mL-1范围内具有良好线性关系。回归方程为:Y=52.249X-32.54,r=0.9999,平均回收率为100.08%(RSD=1.14%)。结论结果表明该方法准确可靠,重现性好,结果稳定。  相似文献   

4.
郑荔军  徐伟  叶静 《海峡药学》2005,17(2):13-16
目的建立复方淫羊藿胶囊的质量控制方法。方法用薄层色谱法对复方淫羊藿胶囊制剂中的淫羊藿、女贞子进行定性鉴别,HPLC法测定淫羊藿苷的含量。结果鉴别方法专属性好,测定淫羊藿苷的线性范围为4.096μg·mL-1~24.576μg·mL-1,r=0.9995,平均加样回收率99.43%,RSD=0.62%(n=6)。结论方法专属性好,稳定,可用于复方淫羊藿胶囊的质量控制。  相似文献   

5.
目的  建立更年灵胶囊中淫羊藿苷含量的 HPL C测定方法。方法  色谱柱为 Nova-pak( 15 0 mm× 4.6mm ,5μm) C1 8柱 ,乙腈 -水 ( 2 6∶ 74)为流动相 ,检测波长 ;2 70 nm。 结果  淫羊藿苷在 2 0 .2 6~ 162 .0 μg·L- 1 ,范围内呈良好的线性关系 ,r=0 .9998,平均回收率为 10 0 .1% ,RSD=1.1% ( n=5 )。 结论  方法结果准确 ,重现性好 ,可用于测定更年灵胶囊中淫羊藿苷的含量。  相似文献   

6.
目的建立HPLC法测定心通胶囊中淫羊藿苷含量的方法。方法采用色谱柱为Hypersil BDS C18柱(250mm×4.60mm,5μm);流动相为乙腈-水(28∶72),流速1.0mL·min-1;检测波长为270nm。结果淫羊藿苷在0.05~6.25μg范围内线性关系良好(r=1.000),平均回收率为100.2%,RSD为1.03%(n=5)。结论本法测定简便,结果准确、重现性好,可用于心通胶囊的质量控制。  相似文献   

7.
目的建立藿补胶囊中淫羊藿苷含量高效液相测定方法。方法色谱柱为PhenomenexODS(5μm,250mm×4.6mmID),流动相为乙腈-0.1%磷酸(27∶73),流速1.0mL/min,测定波长为270nm。结果线性范围为0.162~1.62mg(r=0.99999),平均回收率为100.05%,RSD=1.52%(n=6),精密度RSD=1.62%(n=6),重复性RSD=1.94%(n=6)。结论方法简便、稳定、可靠,可用于藿补胶囊中淫羊藿苷含量测定。  相似文献   

8.
HPLC法测定仙乐雄胶囊中淫羊藿苷的含量   总被引:1,自引:1,他引:0  
程世云  郝自新 《安徽医药》2009,13(8):899-900
目的建立仙乐雄胶囊中淫羊藿苷的含量测定方法。方法采用高效液相色谱法测定。色谱柱:C18柱,流动相:乙腈-水(28∶72),流速:1.0 ml.min-1,检测波长:270 nm。结果淫羊藿苷在0.104-1.040μg之间线性关系良好,r=0.9999;平均加样回收率为98.7%,(n=6,RSD=0.51%)。结论试验表明,该方法操作简单,分离效果好,灵敏度高,可以用于仙乐雄胶囊的质量控制。  相似文献   

9.
不同产地和品种淫羊藿中淫羊藿苷的HPLC分析   总被引:17,自引:0,他引:17  
目的 :对中药淫羊藿中淫羊藿苷的含量分析进行方法学研究 ,并测定淫羊藿的不同产地、不同品种、不同药用部位的淫羊藿苷的含量。方法 :采用RP HPLC技术对 7个品种 2 3个样品进行测定。以PERKIN EIMER SH/5C18柱为分析柱 ,流动相为乙腈 水 36%乙酸 ( 2 5∶73.5∶1 .5)流速 1 .0ml/min。UV检测波长 2 70nm。结果 :本方法测定淫羊藿苷含量在 0 .0 2 1 2~ 0 .1 2 7μg ,0 .53~ 1 .696μg范围内呈良好的线性关系。不同产地、不同品种、不同药用部位的淫羊藿其淫羊藿苷的含量为 0 .0 0 30 7%~ 1 .55%。同一植株不同部位中淫羊藿苷的含量分布叶 >叶茎 >茎 >根。结论 :淫羊藿由于产地不同、品种不同其淫羊藿苷的含量相差悬殊。本测定方法为筛选优良品种和扩大药源提供了简便易行的方法  相似文献   

10.
目的:建立测定更年灵胶囊中淫羊藿苷含量的方法。方法:采用HPLC法,色谱柱为Hypersil ODS C18(4.6mm×200 mm,5μm),流动相为乙腈-0.5%冰醋酸溶液(26:74),流速1.0 ml·min-1,检测波长270 nm。结果:淫羊藿苷与其相邻杂质峰的分离度符合要求,淫羊藿苷在0.50-2.50μg范围内峰面积与进样量线性关系良好,回归方程:Y=22.560X-0.048,r= 0.999 7,n=5。平均加样回收率为102.4%,RSD为0.97%,n=6。结论:本文建立的分析方法简便、重现性好,可用于更年灵胶囊中淫羊藿苷含量测定。  相似文献   

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13.
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   

14.
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   

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16.
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.
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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   

19.
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   

20.
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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