由于阿托瓦斯塔丁的代谢激活导致的蛋白质共价变异和肝细胞毒性
Chunjing Guan1, Mingyu Zhang1, Yuge Li1
1Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning, People's Republic of China.
Archives of toxicology
|February 12, 2026
概括
阿托瓦斯塔丁 (ATV) 由于其由CYP3A的代谢激活,可能导致肝损伤. 这项研究确定了反应性中间体,并证明抑制CYP3A可以降低ATV.
科学领域:
- 药理学 药理学是指药理学的学科.
- 肝毒性 肝毒性 肝毒性
- 药物新陈代谢 药物新陈代谢
背景情况:
- 阿托瓦斯塔丁 (ATV) 是一种用于管理高脂血症和预防心血管疾病的广泛处方的他.
- 患者报告表明,ATV使用与肝损伤相关的风险,需要对其肝毒性机制进行调查.
研究的目的:
- 为了阐明阿托瓦斯塔丁诱导的肝毒性及其由细胞染色体P450酶的代谢激活之间的关联.
- 为了确定涉及ATV毒性作用的特定代谢物和反应性中间体.
主要方法:
- 在体外研究使用NADPH补充系统与谷氨 (GSH) 和囊 (Cys) 作为捕获剂.
- 液体染色学-并联质谱学 (LC-MS/MS) 用于代谢物和结合物检测.
- 在小鼠体内研究,包括ATV的胃内给药和初级肝细胞的分析.
- 使用抑制剂基托可纳 (KTC) 对CYP3A参与的评估.
主要成果:
- 确定了两个I期代谢物 (M1,M2) 和相应的GSH (M3,M4) 和Cys (M5,M6) 合物,表明有电友性胺-胺中间体形成.
- 在体外和体外研究证实了ATV暴露后的GSH结合和蛋白质添加.
- 鉴定出CYP3A是负责ATV代谢激活的主要酶.
- 开托可纳治疗前显著降低了ATV诱导的蛋白质添加和肝细胞细胞毒性.
结论:
- 这项研究系统地描述了阿托瓦斯塔丁的CYP3A介导生物激活过程.
- 这些发现为阿托瓦斯塔丁的特异性肝毒性提供了机理性的见解.
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