A fast, simple and sensitive high performance liquid chromatographic (HPLC) method has been developed for determination of 10a-methoxy-6-methyl ergoline-8b-methanol (MDL, a main metabolite of nicergoline) in human pla...A fast, simple and sensitive high performance liquid chromatographic (HPLC) method has been developed for determination of 10a-methoxy-6-methyl ergoline-8b-methanol (MDL, a main metabolite of nicergoline) in human plasma. One-step liquid–liquid extraction (LLE) with diethyl ether was employed as the sample preparation method. Tizanidine hydrochloride was selected as the internal standard (IS). Analysis was carried out on a Diamonsil ODS column (150 mm 4.6 mm, 5 mm) using acetonitrile–ammonium acetate (0.1 mol/L) (15/85, v/v) as mobile phase at detection wavelength of 224 nm. The calibration curves were linear over the range of 2.288–73.2 ng/mL with a lower limit of quantitation (LLOQ) of 2.288 ng/mL. The intra-and inter-day precision values were below 13% and the recoveries were from 74.47% to 83.20% at three quality control levels. The method herein described was successfully applied in a randomized crossover bioequivalence study of two different nicergoline preparations after administration of 30 mg in 20 healthy volunteers.展开更多
目的建立人血浆中盐酸氨溴索浓度的HPLC-MS方法，用以测定健康志愿者口服盐酸氨溴索颗粒后的血药浓度．估算受试制剂和参比制剂的药代动力学参数，评价两种制剂的生物等效性和相对生物利用度。方法血浆中加入内标红霉素后，乙醚提取．HP...目的建立人血浆中盐酸氨溴索浓度的HPLC-MS方法，用以测定健康志愿者口服盐酸氨溴索颗粒后的血药浓度．估算受试制剂和参比制剂的药代动力学参数，评价两种制剂的生物等效性和相对生物利用度。方法血浆中加入内标红霉素后，乙醚提取．HPLC-MS分离一分析。色谱系统：Phenomenex Luna CN柱150mm×2．0mmI．D．3μm，甲醇：水（含0．1％甲酸）=46：54为流动相，流速0．2mL／min，柱温30℃。质谱检测方式：SIM。结果盐酸氨溴索线性范围为3．125-800ng／mL，最低检测浓度为3．125ng／mL，提取回收率78．374％～93．130％。测定22名健康志愿者单剂量交叉口服盐酸氨溴索颗粒（受试制剂）及盐酸氨溴索片（参比制剂）90nag后的血药浓度经时过程，受试制剂和参比制剂的主要药代动力学参数：Cmax294．075ng／mL和297．870ng／mL；Tmax1．705ng／mL和1．523ng／mL；t1／2 8．646h和9．495h，无显著差异；受试制剂的相对生物利用度为（103．2±38．4）％。结论本法专属、准确、灵敏。统计学结果表明受试制剂和参比制剂生物等效。展开更多
文摘A fast, simple and sensitive high performance liquid chromatographic (HPLC) method has been developed for determination of 10a-methoxy-6-methyl ergoline-8b-methanol (MDL, a main metabolite of nicergoline) in human plasma. One-step liquid–liquid extraction (LLE) with diethyl ether was employed as the sample preparation method. Tizanidine hydrochloride was selected as the internal standard (IS). Analysis was carried out on a Diamonsil ODS column (150 mm 4.6 mm, 5 mm) using acetonitrile–ammonium acetate (0.1 mol/L) (15/85, v/v) as mobile phase at detection wavelength of 224 nm. The calibration curves were linear over the range of 2.288–73.2 ng/mL with a lower limit of quantitation (LLOQ) of 2.288 ng/mL. The intra-and inter-day precision values were below 13% and the recoveries were from 74.47% to 83.20% at three quality control levels. The method herein described was successfully applied in a randomized crossover bioequivalence study of two different nicergoline preparations after administration of 30 mg in 20 healthy volunteers.
文摘目的建立人血浆中盐酸氨溴索浓度的HPLC-MS方法，用以测定健康志愿者口服盐酸氨溴索颗粒后的血药浓度．估算受试制剂和参比制剂的药代动力学参数，评价两种制剂的生物等效性和相对生物利用度。方法血浆中加入内标红霉素后，乙醚提取．HPLC-MS分离一分析。色谱系统：Phenomenex Luna CN柱150mm×2．0mmI．D．3μm，甲醇：水（含0．1％甲酸）=46：54为流动相，流速0．2mL／min，柱温30℃。质谱检测方式：SIM。结果盐酸氨溴索线性范围为3．125-800ng／mL，最低检测浓度为3．125ng／mL，提取回收率78．374％～93．130％。测定22名健康志愿者单剂量交叉口服盐酸氨溴索颗粒（受试制剂）及盐酸氨溴索片（参比制剂）90nag后的血药浓度经时过程，受试制剂和参比制剂的主要药代动力学参数：Cmax294．075ng／mL和297．870ng／mL；Tmax1．705ng／mL和1．523ng／mL；t1／2 8．646h和9．495h，无显著差异；受试制剂的相对生物利用度为（103．2±38．4）％。结论本法专属、准确、灵敏。统计学结果表明受试制剂和参比制剂生物等效。
