了解血红蛋白对高剂量甲状腺素调配人群药理动学的贡献,在患有血液性恶性瘤的儿科患者中
Biljana Škorić1, Marija Jovanović1, Miloš Kuzmanović2,3
1Department of Pharmacokinetics and Clinical Pharmacy, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221, Belgrade, Republic of Serbia.
这项研究开发了小儿癌症患者高剂量甲状腺素 (HDMTX) 的人口药理动力学模型. 该模型通过考虑身体表面积,血红蛋白和肌素来优化HDMTX疗法,以便更好地预测甲状腺素清除量.
科学领域:
- 药理学 药理学是指药理学的学科.
- 儿科瘤学 儿科瘤学
- 制药指标 (Pharmacometrics) 是一个指标.
背景情况:
- 高剂量甲状腺素 (HDMTX) 对于治疗儿科急性淋巴细胞白血病 (ALL) 和非霍奇金淋巴瘤 (NHL) 是至关重要的.
- 了解甲状腺素的药理动力学对于优化治疗疗效和尽量减少儿科患者的毒性至关重要.
- 药物处置的变化需要强大的群体药理动力学模型.
研究的目的:
- 在儿科ALL和NHL患者中开发HDMTX的人口药理动力学 (PopPK) 模型.
- 识别和量化影响治疗期间MTX变异性的因素.
- 通过更好地了解MTX处置来提高治疗优化.
主要方法:
- 非线性混合效应建模应用于接受HDMTX的50名儿科患者 (1-18岁) 的数据.
- 参数估计使用了第一阶条件估计与相互作用 (FOCEI) 方法.
- 逐步共变模型确定了影响MTX清除 (CL) 的因素,包括身体表面积,血红蛋白和血清肌素.
主要成果:
- 为HDMTX.建立了一个两部分的PopPK模型.
- 估计了关键人群的药理动力学参数:CL (5.75 L/h/m2),V1 (21.3 L/m2),V2 (8.2 L/m2) 和Q (0.087 L/h/m2).这些都是估计的关键人群药理动力学参数.
- MTX CL与血清肌素相反相关,并受到血红蛋白水平的积极影响,因血红蛋白而观察到32%的变化.
结论:
- 开发的PopPK模型有助于优化儿童ALL和NHL的HDMTX治疗.
- 该模型结合了功能,体重,特别是血红蛋白对MTX CL的影响.
- 这样可以更好地了解HDMTX的处置,从而促进更个性化的治疗策略.
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