在怀孕期间准确剂量拉莫特里金:生理学基础的药理动力学建模和仿真
Yudie Qian1,2,3, Wanhong Wu1,2, Chengjie Ke1,2
1Department of Pharmacy, The First Affiliated Hospital, Fujian Medical University, Fuzhou, People's Republic of China.
怀孕显著改变了lamotrigine的药理动力学 (PK),减少了药物暴露,增加了发作风险. 这项研究开发了一种PBPK模型,用于指导剂量调整,确保母亲和胎儿的安全.
科学领域:
- 药理学 药理学是指药理学的学科.
- 药理动力学 药理动力学
- 孕产妇和胎儿医学 孕产妇和胎儿医学
背景情况:
- 拉莫是孕妇使用的关键抗发作药物.
- 怀孕引起的拉莫特里金的药理动力学变化可能导致疗效降低和发作频率增加.
- 有限的药理动力学数据使怀孕期间的拉莫特里金剂量调整复杂化.
研究的目的:
- 在怀孕期间预测孕产妇和胎儿的拉莫特里金的药理动力学.
- 提供基于证据的建议,对孕妇的拉莫特里金剂量进行调整.
- 为了加强控制,并确保母亲和胎儿的安全.
主要方法:
- 使用PK-Sim和MoBi. 一个基于生理学的药理动力学 (PBPK) 模型为lamotrigine被开发使用PK-Sim和MoBi.
- 根据现有的临床药理动力学数据验证了PBPK模型.
- 胎儿的拉莫特里金转移被评估使用隔离的骨干输液和Caco-2细胞透性模型.
主要成果:
- 在怀孕期间,拉莫特里金的暴露 (AUC) 显著下降:怀孕初期66.5%,怀孕中期71.1%,怀孕后期81.2%.
- 推剂量增加:怀孕早期3倍,怀孕中期3倍,怀孕晚期5倍.
- 为了保持胎儿安全,制定了最大推的每日剂量,考虑到胎儿风险度.
结论:
- 怀孕期间拉莫特里金暴露的显著减少需要立即调整剂量.
- PBPK建模为优化孕妇拉莫特里金剂量提供了一个强大的框架.
- 推剂量调整的目的是保持治疗性拉莫特里金水平,减少发作的频率,并确保胎儿的福祉.
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