在活体动物香料和实验技术评估持续释放颗粒的实验技术
Masateru Miyake1,2, Mayumi Kano3, Yuji Suzuki3
1Bioavailability Research Project, Formulation Research Institute, Otsuka Pharmaceutical Co. Ltd., Tokushima, Japan.
Biopharmaceutics & drug disposition
|January 3, 2025
概括
经过甲烯化物 (PBT) 治疗的 beagle 狗是评估持续释放 (SR) 药物配方的理想选择,与正常狗或微型猪相比,它们显示出更好的药物吸收和生物可用性. 这一发现有助于开发有效的持续释放药物.
科学领域:
- 药理动力学 药理动力学
- 药物输送系统 药物输送系统
- 动物模型 动物模型
背景情况:
- 评估持续释放 (SR) 配方需要合适的动物模型来加快药物开发.
- 贝格尔犬是常用的,但与人类有生理上的差异,质疑它们对改性释放配方的有用性.
- 需要澄清小狗对评估SR和肠膜配方的有效性.
研究的目的:
- 确定最佳的动物模型和实验技术,用于评估经过修改释放的配方.
- 为了研究从SR颗粒中取出的二皮里达摩尔的药理动力学,使用小猎犬,甲治疗 (PBT) 的小猎犬和微型猪.
主要方法:
- 从原型SR颗粒中研究了二皮里达摩尔的药理动力学.
- 使用了三种动物模型:普通 beagle 狗,PBT beagle 狗和微型猪.
- 给正常狗20毫克的SR颗粒和给PBT狗45毫克的SR颗粒.
主要成果:
- 正常的狗表现出二皮里达摩尔 (20毫克颗粒) 的肠道吸收降低和SR效应.
- PBT犬表现出持续释放效应,并保持了与二皮里达摩尔 (45毫克颗粒) 的生物可用性.
- 微型猪可能适合评估小颗粒 (直径≤1毫米).
结论:
- 建议使用PBT beagle犬来评估SR药片和颗粒,因为它们具有增强的药物吸收和持续释放特性.
- 微型猪可能更适合评估较小的SR颗粒.
- 这项研究为在SR配方开发中选择合适的动物模型提供了关键的见解.
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