应用一种基于生理学的药理动力学模型来预测怀孕期间的异化物处置
Ogochukwu U Amaeze1, Nina Isoherranen1
1Department of Pharmaceutics, University of Washington, School of Pharmacy, Seattle, Washington, USA.
怀孕通过增加其他清除途径而不是N-乙转移酶2 (NAT2) 活性而改变异化 (INH) 药理学. 这一发现对于优化孕妇结核病预防至关重要.
科学领域:
- 药理学 药理学是指药理学的学科.
- 孕产妇健康 孕产妇健康
- 传染病流行病学 传染病流行病学
背景情况:
- 怀孕增加了潜伏结核病感染 (LTBI) 进展为活跃结核病 (TB) 的风险.
- 异化 (INH) 是在怀孕期间对LTBI的标准预防性治疗,主要由N-乙转移酶2 (NAT2) 代谢.
- 不同NAT2表型在怀孕期间对INH药理动力学 (PK) 的影响仍然不太清楚.
研究的目的:
- 通过使用生理学基础的药理动力学 (PBPK) 建模,在各种NAT2表型中评估怀孕对INH处置的影响.
- 确定NAT2活性或其他INH清除途径的变化是否有助于妊娠期间改变INH PK.
主要方法:
- 在具有NAT2快速 (FA),中等 (IA) 和缓慢 (SA) 乙化表型的非怀孕个体中开发和验证INH的全身PBPK模型.
- 扩展PBPK模型以模拟怀孕期间的INH处置.
- 敏感性分析,以评估怀孕引起的生理变化对INH清除途径的影响.
主要成果:
- 该PBPK模型准确地预测了非怀孕个体的INH PK参数 (AUC,Cmax).
- 敏感性分析表明,怀孕期间NAT2活性保持不变,而其他INH清除途径增加约80%.
- 该模型被应用于预测来自不同族群的高结核病负担的孕妇的INH倾向.
结论:
- 怀孕显著改变INH的处置,主要是通过增加非NAT2清除途径,独立于NAT2表型.
- 开发的PBPK模型提供了一个有价值的工具,用于预测INH PK在不同人群中的孕妇.
- 这个模型可以扩展到通过NAT2代谢的其他药物,有助于优化怀孕期间的治疗.
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