This study pharmacokinetically examined the lovastatin sustained-release tablet and sustained-release capsule in Beagle dogs. An reversed-phase HPLC method was established for the determination of lovastatin in Beagl...This study pharmacokinetically examined the lovastatin sustained-release tablet and sustained-release capsule in Beagle dogs. An reversed-phase HPLC method was established for the determination of lovastatin in Beagle dog plasma. Pharmacokinetic findings were compared among three preparation(lovastatin sustained-release tablet,T p; sustained-release capsule,T J and conventional capsule). Our results showed that the pharmacokinetic parameters in 6 dogs after single-dose oral administration of three perparations were calculated. T max, C max and MRT revealed significant difference (P<0.05). Relative bioavailability was 111.5±16.9 % (T P) and 110.4%±9.6 % (T J). The pharmacokinetic parameters in the 6 dogs after multiple-dose oral administration of three perparations, T max, C max MRT and DF had significant difference (P<0.05); C av , C min and AUC 0-24 h displayed no significant difference (P>0.05). It is concluded that the lovastatin sustained-release tablet and sustained-release capsule are able to maintain a sustained-release for 24 h.展开更多
目的观察推拿治疗原发性痛经(primary dysmenorrhea,PD)的疗效,探讨其对PD患者子宫动脉血流动力学参数和血清前列腺素的影响。方法 60例PD患者随机分为推拿组和对照组,每组30例,分别给予推拿手法及口服布洛芬缓释胶囊,连续治疗3个月经...目的观察推拿治疗原发性痛经(primary dysmenorrhea,PD)的疗效,探讨其对PD患者子宫动脉血流动力学参数和血清前列腺素的影响。方法 60例PD患者随机分为推拿组和对照组,每组30例,分别给予推拿手法及口服布洛芬缓释胶囊,连续治疗3个月经周期。采用视觉模拟评分(visu alanalogue scale,VAS)评价疼痛程度,检测两组治疗前后子宫动脉血流动力学参数[搏动指数(PI),阻力指数(RI),收缩期峰值/舒张期峰值(S/D)比值]及经期血清前列腺素F2α(PGF2α)、前列腺素E2(PGE2)含量。结果治疗前两组各项指标比较,差异均无统计学意义(P>0.05)。治疗后推拿组VAS读值(mm,33.17±7.93 vs 63.53±9.48)、PI(2.18±0.18 vs 2.74±0.23)、RI(0.67±0.09 vs 0.86±0.27)、S/D(5.44±0.47vs7.56±0.28)比值及血清PGF2α含量(ng/L,28.10±2.41 vs3 7.68±2.16)低于同期对照组,PGE2含量(ng/L,29.82±2.13 vs 26.43±1.42)高于对照组,差异均有统计学意义(P<0.05,P<0.01)。结论推拿治疗PD疗效显著,其机制可能通过改善子宫动脉高阻、低速的血流特征,调节异常的PGF2α及PGE2水平,发挥止痛效应。展开更多
文摘This study pharmacokinetically examined the lovastatin sustained-release tablet and sustained-release capsule in Beagle dogs. An reversed-phase HPLC method was established for the determination of lovastatin in Beagle dog plasma. Pharmacokinetic findings were compared among three preparation(lovastatin sustained-release tablet,T p; sustained-release capsule,T J and conventional capsule). Our results showed that the pharmacokinetic parameters in 6 dogs after single-dose oral administration of three perparations were calculated. T max, C max and MRT revealed significant difference (P<0.05). Relative bioavailability was 111.5±16.9 % (T P) and 110.4%±9.6 % (T J). The pharmacokinetic parameters in the 6 dogs after multiple-dose oral administration of three perparations, T max, C max MRT and DF had significant difference (P<0.05); C av , C min and AUC 0-24 h displayed no significant difference (P>0.05). It is concluded that the lovastatin sustained-release tablet and sustained-release capsule are able to maintain a sustained-release for 24 h.
文摘目的观察推拿治疗原发性痛经(primary dysmenorrhea,PD)的疗效,探讨其对PD患者子宫动脉血流动力学参数和血清前列腺素的影响。方法 60例PD患者随机分为推拿组和对照组,每组30例,分别给予推拿手法及口服布洛芬缓释胶囊,连续治疗3个月经周期。采用视觉模拟评分(visu alanalogue scale,VAS)评价疼痛程度,检测两组治疗前后子宫动脉血流动力学参数[搏动指数(PI),阻力指数(RI),收缩期峰值/舒张期峰值(S/D)比值]及经期血清前列腺素F2α(PGF2α)、前列腺素E2(PGE2)含量。结果治疗前两组各项指标比较,差异均无统计学意义(P>0.05)。治疗后推拿组VAS读值(mm,33.17±7.93 vs 63.53±9.48)、PI(2.18±0.18 vs 2.74±0.23)、RI(0.67±0.09 vs 0.86±0.27)、S/D(5.44±0.47vs7.56±0.28)比值及血清PGF2α含量(ng/L,28.10±2.41 vs3 7.68±2.16)低于同期对照组,PGE2含量(ng/L,29.82±2.13 vs 26.43±1.42)高于对照组,差异均有统计学意义(P<0.05,P<0.01)。结论推拿治疗PD疗效显著,其机制可能通过改善子宫动脉高阻、低速的血流特征,调节异常的PGF2α及PGE2水平,发挥止痛效应。