怀孕期间venlafaxine的精确剂量:一种药理动力学建模方法
Mona Alenezi1,2, Raj K S Badhan2
1Ministry of Health Kuwait, Aljhara Hospital, Sulaibkhat, Jamal Abdel Nasser Street, PO Box 5, 13001, Kuwait.
由于生理变化和CYP2D6遗传变异,怀孕期间需要调整文拉法辛剂量. 标准剂量往往低于治疗水平,特别是对于广泛和超快速代谢者.
科学领域:
- 药理学 药理学是指药理学的学科.
- 孕产妇和胎儿医学 孕产妇和胎儿医学
- 遗传学 遗传学 是一个
背景情况:
- 怀孕期间母亲的生理变化显著改变药物的药理动力学.
- CYP2D6的遗传多态性影响了芬拉法辛的代谢和血度.
- 了解这些因素对于在孕妇中使用venlafaxine的安全和有效性至关重要.
研究的目的:
- 为了模拟整个妊娠期间拉法辛的药理动力学变化.
- 根据母亲生理学和CYP2D6表型,确定最佳的文拉法辛剂量策略.
- 确保文拉法辛的血度保持在母亲和胎儿的治疗范围之内.
主要方法:
- 使用药理动力学建模来模拟文拉法辛水平.
- 评估了母亲和胎儿的带血中文拉法辛度的变化.
- 对不同CYP2D6代谢表型 (PM,EM,UM) 的剂量调整进行了评估.
主要成果:
- 在整个妊娠期间,模拟的venlafaxine最低度在广泛代谢器 (EM) 和超快代谢器 (UM) 中显著下降.
- 到第30周,超过70%的EM和UM表型低于治疗水平 (<25 ng/ml).
- 较差代谢器 (PM) 现型显示出与治疗水平的最小偏差 (约. 4%) 的情况.
结论:
- 对于大多数所有CYP2D6表型的孕妇来说,标准75毫克的文拉法辛每日剂量是不够的.
- 推剂量因表型而异:PM每天37.5-112.5毫克,EM每天增加剂量 (225-375毫克),并在整个妊娠期间持续每天375毫克的UM.
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