在使用生理学基础生物制药模型预测结肠光线和组织度的梅萨拉胺和乙梅萨拉胺的挑战
Harshad Jadhav1, Arno Van Camp2, Christer Tannergren3
1Digital Science, x-Sustainable Innovation & Transformational Excellence, Pharmaceutical Technology & Development, AstraZeneca Gothenburg, 43183 Mölndal, Sweden; Drug Delivery and Disposition, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Gasthuisberg O&N II, Herestraat 49 - Box 921, 3000 Leuven, Belgium.
基于生理学的生物制药模型 (PBBM) 准确地预测了梅沙胺 (5-ASA) 血水平,但与结肠组织度作斗争. 需要进一步的研究来完善胃肠道药物分发的模型.
科学领域:
- 药理动力学和药理动力学
- 计算机建模和模拟
- 胃肠病学 胃肠病学
背景情况:
- 梅萨拉胺 (5-ASA) 是炎症性肠道疾病 (IBD) 的基石疗法.
- 梅萨拉胺在肠细胞中的确切作用机制尚未完全理解.
- 精确预测肠道药物度对于优化IBD治疗至关重要.
研究的目的:
- 为梅萨拉胺 (5-ASA) 和其代谢物乙梅萨拉胺 (Ac-5-ASA) 开发和验证生理基础生物制药模型 (PBBM).
- 在健康受试者中预测血,结肠光和结肠组织中的药物度.
- 将模型预测与测量药物度进行比较.
主要方法:
- 使用Simcyp模拟器 (V22) 为5-ASA和Ac-5-ASA构建PBBM.
- 模拟了各种梅萨拉胺配方,包括静脉注射,即时释放和受控释放的口服剂型.
- 将in silico预测与体内测量的度在血,结肠膜和组织中进行比较.
主要成果:
- 对于多种配方,PBBM准确地预测了5-ASA和Ac-5-ASA的血度在两倍范围内.
- 模型成功捕获了5-ASA到Ac-5-ASA的肠道和肝脏代谢.
- 对结肠的光线和组织度,特别是对可控释放配方,观察到显著的低预测 (高达5-ASA的506倍).
结论:
- 目前的PBBM显示出预测全身暴露的潜力,但在模拟结肠中的局部药物度方面存在局限性.
- 这些差异凸显了模拟肠细胞内药物积累和局部胃肠道药物分布的挑战.
- 未来的研究需要改进N-乙转移酶1 (NAT1) 丰度数据和先进的建模策略,以准确预测结肠药物度.
更多相关视频
13:17The Mesenteric Lymph Duct Cannulated Rat Model: Application to the Assessment of Intestinal Lymphatic Drug Transport
Published on: March 6, 2015
08:58Analyzing Beneficial Effects of Nutritional Supplements on Intestinal Epithelial Barrier Functions During Experimental Colitis
Published on: January 5, 2017
相关概念视频
Physiological Pharmacokinetic Models: Incorporating Hepatic Transporter-Mediated Clearance
A recent model describes pravastatin's hepatobiliary excretion,...
Pharmacokinetic Models: Comparison and Selection Criterion
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.
Drugs for Treatment of Ulcerative Colitis in IBD
Physiological Pharmacokinetic Models: Assumption with Protein Binding
Pharmacokinetic Models: Overview
There are three primary types of models: empirical, compartment, and physiological. Empirical models, with minimal...
Model Approaches for Pharmacokinetic Data: Compartment Models
Two primary types of compartment models are recognized: mammillary and catenary. The more...
