物种和组织差异对Diclofenac在体内葡萄糖化的影响
Eric Asare1, Shalom Emmanuel1, Ting Du1
1Department of Pharmaceutical Science, College of Pharmacy and Health Sciences, Texas Southern University, 3100 Cleburne Street, Houston, TX 77004, USA.
Molecules (Basel, Switzerland)
|January 8, 2025
概括
狄克洛菲纳克的葡萄化主要发生在肝脏中,在不同物种和组织中观察到显著的差异. 这些物种特异性差异对于迪克洛菲纳克至关重要.
科学领域:
- 药理动力学和药物新陈代谢
- 相对毒理学比较
- 生物化学 生物化学
背景情况:
- 狄克洛菲纳克是一种广泛使用的非类固醇抗炎药物 (NSAID).
- 了解其代谢途径,特别是葡萄糖化,对于预测其疗效和毒性至关重要.
- 在体外研究对于剖析特定物种和特定组织的代谢差异至关重要.
研究的目的:
- 为了研究物种和组织来源对迪克洛菲纳克糖化的影响.
- 在各种体外系统中量化迪克洛芬雅克葡萄化代谢动力学参数.
- 为了确定影响狄克洛芬雅克代谢的关键因素.
主要方法:
- 用肝脏,肠道和脏微粒化迪克洛芬雅克从老鼠,子,小鼠,狗和人类.
- 使用超高性能液体染色学 (UHPLC) 量化二二烯酸代谢物.
- 使用迈凯利斯-门建模,确定代谢动力学参数 (Vmax,Km).
主要成果:
- 肝脏在人类和老鼠组织中表现出显著更高的迪克洛菲纳克葡萄化率,相比于肠道和脏.
- 小鼠肝脏显微体显示了双甲代谢的最高最大反应速率 (Vmax) (7.22nmol/min/mg).
- 在Vmax中观察到显著的物种间差异,人类 (6.66 ± 0.33),狗 (5.05 ± 0.42),子 (3.88 ± 0.15) 和大鼠 (0.83 ± 0.04nmol/min/mg) 肝脏显微体显示出不同的代谢能力.
结论:
- 肝脏是主要负责狄克洛菲纳克糖化作用的器官.
- 在狄克洛芬雅克的葡萄糖化中存在显著的物种间变异性.
- 在药理学,制药学和毒理学评估中,必须考虑双甲代谢的特定物种差异.
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