使用PBPK方法间接建模食后肠道淋巴吸收halofantrine:局限性和影响
Malaz Yousef1, Farag E S Mosa1, Khaled H Barakat1
1Faculty of Pharmacy & Pharmaceutical Sciences, Katz Centre for Pharmacy & Health Research, University of Alberta, Edmonton, AB T6G 2E1, Canada.
这项研究开发了一种基于生理学的药理动力学 (PBPK) 模型,以模拟脂肪饮食后的口腔淋巴体药物吸收,揭示了养状态下减少的第一通代谢,并强调了直接淋巴体建模的需要.
科学领域:
- 药理动力学和药物新陈代谢
- 生理学基础的药理动力学 (PBPK) 建模
- 药物吸收和分发的过程
背景情况:
- 肠道淋巴体药物运输至关重要,但在药理动力学上没有得到充分的模型.
- 基于生理学的药理动力学 (PBPK) 模型对于理解药物行为至关重要.
- Halofantrine 的口服吸收,特别是在脂肪饮食后,需要详细的药理动力学研究.
研究的目的:
- 开发一个PBPK模型,用于脂肪饭后口腔淋巴吸收halofantrine.
- 通过参数调整,间接模拟在养状态下的淋巴运输.
- 为了探索食后条件对halofantrine药理动学的影响.
主要方法:
- 使用了GastroPlusTM软件和已发表的文献数据来模拟halofantrine.
- 通过对新陈代谢,溶解度和溶解度的调整间接模拟淋巴干扰.
- 采用分子动力学模拟来评估在食后pH下halofantrine的行为.
主要成果:
- 与禁食状态相比,PBPK模型显示,在食状态下,halofantrine的第一通代谢减少.
- 食状态建模需要调整代谢动力学和受肠道pH变化影响的参数.
- 分子动力学证实了由于饭后的pH值变化而导致的halofantrine的结构重组.
结论:
- 强调需要直接对肠道淋巴吸收进行PBPK建模.
- 强调在养状态或脂质配方中纳入药物的物理化学因素的重要性.
- 为改善药物开发和监管考虑的预测建模做出贡献.
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