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在雄性大鼠中引起的podophyllotoxin心脏毒性的潜在机制:毒理学证据链 (TEC) 概念
Kaiyue Ma1, Lu Sun2, Chunxue Jia1
1School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China.
Frontiers in pharmacology
|October 10, 2024
概括
在24小时内,Podophyllotoxin (PPT) 在老鼠中引起急性心脏毒性,影响心脏细胞并导致潜在的氧化应激和炎症. 本研究调查了这种毒性的机制,以提高理解和患者安全.
科学领域:
- 毒理学 毒理学 毒理学
- 药理学 药理学是指药理学的学科.
- 生物化学 生物化学
背景情况:
- 来自Dysosma versipellis的Podophyllotoxin (PPT) 具有生物学活性,但具有严重的毒性.
- 心脏毒性是高剂量或短期PPT暴露的一个重大问题.
- 了解PPT的急性心脏毒性机制对于临床安全至关重要.
研究的目的:
- 调查波多菲洛托克辛 (PPT) 的24小时急性心脏毒性机制.
- 用毒理学证据链 (TEC) 原则来阐明机制.
- 确定参与PPT诱导心脏毒性的关键分子和代谢途径.
主要方法:
- 在暴露于PPT的Sprague-Dawley大鼠中进行了急性毒性研究.
- 通过行为和体重变化评估损伤表型证据 (IPE).
- 通过组织病理学和心脏生物标志物分析的不良结果证据 (AOE).
- 毒性事件证据 (TEE) 通过综合代谢和转录组分析.
主要成果:
- 在大鼠中,PPT暴露 (120 mg/kg) 在24小时内引起显著的心脏损伤.
- 血清心肌酶和心脏生物标志物的升高证实了心脏毒性.
- 转录组分析确定了阿拉基酸代谢作为主要改变的途径.
- 在特定代谢物,基因 (Cyp2e1,Aldob,Fmo2,Timd2) 和心脏损伤标志物 (BNP,Mb) 之间发现的相关性.
结论:
- PPT通过涉及氧化应激,亡,炎症和能量代谢障碍的机制诱导急性心脏毒性.
- 这项研究提供了对PPT诱导心脏毒性的分子机制的初步见解.
- 这些发现强调了在PPT治疗期间监测心脏功能的重要性.
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