血浆中氧化槐果碱的气相色谱测定及其在兔体内的药代动力学

氧化槐果碱(oxysophocarpine)是从苦参(Sophora flavesecens Ait)中分离得到的一种生物碱。已报道的含量测定方法有薄层层析比色法和高效液相层析法。近年来临床发现苦参总碱有平喘、升高白细胞、抗炎及抗心律失     

氧化槐果碱对小鼠炎症性疼痛的镇痛作用研究

目的研究氧化槐果碱对二甲苯和角叉菜胶诱导的小鼠炎症性疼痛的影响,以探索其可能的机制。方法 ICR小鼠50只,随机分为模型组、ASP治疗组、氧化槐果碱高、中、低剂量组,各组分别给予对应药物1 h后,采用二甲苯致小鼠耳肿胀实验和角叉菜胶诱导的小鼠足趾肿胀实验,研究氧化槐果碱对小鼠各种炎症性刺激的影响。结果与生理盐水组相比,氧化槐果碱各剂量组能明显抑制二甲苯致小鼠耳肿胀程度和角叉菜胶致小鼠足趾肿胀程度;小鼠足组织的TNF-α,IL-1β,IL-6和PGE2水平显著降低。结论 OSC对角叉菜胶诱导的炎性疼痛具有明显的镇痛作用,可能与其抑制炎性因子的分泌有关。     

Pharmacokinetic study of matrine, oxymatrine and oxysophocarpine in rat plasma after oral administration of Sophora flavescens Ait. extract by liquid chromatography tandem mass spectrometry

A rapid, sensitive and selective high-performance liquid chromatography tandem mass spectrometric method (HPLC-MS) has been developed and validated for the simultaneous determination of matrine (MT), oxymatrine (OMT) and oxysophocarpine (OSP) in rat plasma after oral administration of Sophora flavescens Ait. extract using pseudoephedrine hydrochloride as an internal standard (I.S.). The three analytes were extracted from the plasma samples by liquid-liquid extraction with chloroform. The chromatographic separation was accomplished on a Kromasil C18 column (150 mm x 4.6 mm). Detection was performed on a single quadrupole mass spectrometer by selected ion monitoring (SIM) mode via electrospray ionization (ESI) source. The total run time was 12 min between injections. The assay had a lower limit of quantification of 1.0 ng/ml for MT, 2.0 ng/ml for OMT and 2.0 ng/ml for OSP using 200 microl of plasma. The calibration curves were linear in the measured range. The overall precision and accuracy for all concentrations of quality controls and standards was better than 15%. The proposed method enables unambiguous identification and quantification of MT, OMT and OSP in vivo. This was the first report on determination of the major quinolizidine alkaloids in rat plasma after oral administration of Sophora flavescens Ait. extract. The results provided a meaningful basis for evaluating the clinical applications of the herbal medicine.     

槐果碱,氧化槐果碱的药代动力学与药效动力学

以QTc延长率为效应指标,用药代动力学-药效动力学结合模型对槐果碱、氧化槐果碱ⅳ后在兔体内的处置和效应动力学作定量分析。两药的血浓时程均符合二房室模型,两药的效应与效应室浓度之间的关系均符合S形Emax模型。两药彼此的药动学和药效学性质均有明显差异,但它们各自的药动学和药效学性质均为非剂量依赖性。     

HPLC法同时测定参莲胶囊中7种生物碱成分的含量

摘 要 目的：建立RP HPLC双波长法同时测定参莲胶囊中氧化苦参碱、槐定碱、氧化槐果碱、苦参碱、槐果碱、粉防己碱、防己诺林碱7种生物碱含量。 方法: 采用Venusil XBP NH2（250 mm×4.6 mm,5 μm）色谱柱,以乙腈 0.01%醋酸铵水溶液为流动相梯度洗脱,流速为1.0 ml·min-1,检测波长为210 nm、280 nm。 结果: 氧化苦参碱、槐定碱、氧化槐果碱、苦参碱、槐果碱、粉防己碱、防己诺林碱线性范围分别为32.07～513.07 μg·ml-1（r=0.998 8）、37.90～606.40 μg·ml-1（r=0.999 2）、23.07～369.07 μg·ml-1（r=0.999 2）、52.37～837.87 μg·ml-1（r=0.999 7）、17.63～282.13 μg·ml-1（r=0.999 1）、5.30～84.80 μg·ml-1（r=0.999 5）、8.87～141.87 μg·ml-1（r=0.999 7）;平均加样回收率（n=9）为100.16%~102.84%（RSD≤2.0%）。5批样品中氧化苦参碱、槐定碱、氧化槐果碱、苦参碱、槐果碱、粉防己碱、防己诺林碱含量依次为9.18~9.69 mg·g-1、9.35~11.74 mg·g-1、6.73~7.09 mg·g-1、15.17~15.96 mg·g-1、5.03~5.33 mg·g-1、1.23~1.97 mg·g-1、2.48~2.74 mg·g-1。 结论: 所建立的多成分分析方法可用于参莲胶囊中7个生物碱成分的含量测定。     

苦参与苦豆子中生物碱的高效液相层析法与薄层光密度法测定

本文报道苦参与苦豆子中五种生物碱的两种微量测定方法——高效液相层析法与薄层光密度法。前法重现性好,纯品的回收率为98.2～99.3%,后法操作简便不需净化,线性范围为1～4μg。方法的变异系数分别为0.68～1.74%及1.62～2.77%,两法测定结果一致。     

血浆中氧化槐果碱的气相色谱测定及其在兔体内的药代动力学

氧化槐果碱(oxysophocarpine)是从苦参(Sophora flavesecens Ait)中分离得到的一种生物碱。已报道的含量测定方法有薄层层析比色法和高效液相层析法。近年来临床发现苦参总碱有平喘、升高白细胞、抗炎及抗心律失