实验性结肠炎的循环时间依赖性影响对神素的处置和毒性
Yi Yang1, Pengcheng Wu2, Juntao Guo3
1Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, China.
炎症性肠病 (IBD) 以时间依赖的方式改变药物代谢和毒性,与中断的昼夜节律和BMAL1功能有关. 这影响了IBD患者的药物疗效和安全性.
科学领域:
- 时代药理学 时代药理学
- 药物新陈代谢 药物新陈代谢
- 炎症性肠道疾病研究研究
背景情况:
- 在患有炎症性肠病 (IBD) 的患者中,药物处置发生显著变化.
- 在IBD中这些药物倾向变化的昼夜时间依赖性仍然在很大程度上未被探索.
- 实验性结肠炎模型提供了一个平台来调查时间药物处置变化.
研究的目的:
- 为了确定实验性结肠炎对药物处置的时间影响.
- 为了研究大肠炎对药物诱导的毒性随时间推移的影响.
- 阐明IBD中依赖时间的药物处置变化背后的分子机制.
主要方法:
- 在小鼠模型中进行RNA测序以识别大肠炎受影响的基因.
- 肝脏显微体和药物动力学分析以评估酶活性.
- 双化酶测定和染色体免疫沉 (ChIP) 探索调节途径.
主要成果:
- 大肠炎显著改变了细胞染色体P450 (CYP) 酶的表达,特别是在Zeitgeber时间8 (ZT8) 下调CYP1A2和CYP2E1.
- 这种下调与降低药物代谢和增加ZT8.8.1中CYP1A2/CYP2E1基质西奥菲林的毒性相关.
- 破坏BMAL1 (大脑和肌肉ARNT-Like 1) 功能被确定为失调CYP1A2和CYP2E1表达的原因,BMAL1直接调节它们的转录.
结论:
- 大肠炎和慢性药理学之间存在着强烈的联系,表明IBD对药物处置和毒性的时间依赖性影响.
- 由于大肠炎导致的BMAL1功能受损是药物代谢和毒性观察到的变化的基础.
- 这项研究为优化IBD患者药物剂量和时间的优化提供了基础.
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