释放调节机制和比较贝格尔犬中贝坦霍尔载体口服剂型的药理动力学
Hyeong-Mo Jeong1, Hansol Kim2, Taeyeon Jang2
1Department of Pharmacy, College of Pharmacy, Ajou University, Suwon 16499, Republic of Korea; Central Research Institute, IL-YANG Pharmaceutical Co., Ltd., Yongin 17096, Republic of Korea.
开发Bethanechol化物 (BTC) 的新型口服剂型旨在改善膀功能障碍的治疗. 优化胃阻塞药片 (GRT) 提供快速开始和持续释放,减少剂量频率,以改善患者的遵守.
科学领域:
- 制药科学 制药科学
- 药物输送系统 药物输送系统
- 药理动力学 药理动力学
背景情况:
- 贝坦霍尔化物 (BTC) 对于治疗膀功能障碍至关重要,但由于其特性,在口服剂型开发方面面临挑战.
- 高水溶性,短半衰期和快速消除需要频繁的剂量 (每天四次).
研究的目的:
- 开发优化的BTC载体口服剂型,以改善治疗效果和减少剂量频率.
- 为了比较各种新型BTC配方的释放机制和体内药理动力学.
主要方法:
- 设计了四种装有BTC的口服剂型:胃保留性片 (GRT),控制释放性片 (CRT),双层片 (BLT) 和片内片 (TIT).
- 分析了释放特征,聚合物膨胀 (Vergnaud模型) 和药物-聚合物相互作用.
- 在体内进行了对 beagle 狗的药理动力学研究.
主要成果:
- 优化的GRT F-5表现出快速浮力和持续的药物释放12小时.
- CRT显示Fickian扩散,而BLT和TIT显示双相释放.
- 药理动力学研究表明,GRT F-5和CRT在48小时内与参考水平相比,具有有利的AUC概况.
- GRT F-5表现出迅速发作和持续释放,具有较高的初始Cmax和AUC ((0-12h),类似于即时释放片.
结论:
- 胃保留性药片 (GRT) 配方显示出显著的潜力,可以改善患者在膀功能障碍治疗中的遵从性.
- GRT F-5实现了快速开始和持续的药物释放,有效地减少了频繁剂量的需要.
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