在甲基引起的肝毒性中激活铁和NF-κB/NLRP3/MAPK通路
Yueqing Xie1, Hongsen Yu1, Yingrong Ye1
1College of Life Sciences and Engineering, Foshan University, Foshan, Guangdong Province, PR China.
Toxicology and industrial health
|December 13, 2024
概括
甲基通过触发铁,氧化应激和炎症而导致肝损伤. 这项研究揭示了涉及甲基引起的急性肝损伤的关键分子通路.
科学领域:
- 毒理学 毒理学 毒理学
- 肝病学 肝病学是一种肝病学.
- 细胞死亡研究 细胞死亡研究
背景情况:
- 甲基 (MeHg) 是一种已知的肝毒素.
- 甲诱导的肝损伤的确切机制,特别是铁亡的作用,尚未完全理解.
研究的目的:
- 调查铁病在甲基引起的急性肝损伤 (ALI) 中的作用.
- 阐明潜在的分子通路,包括氧化应激,炎症和MAPK信号传递.
主要方法:
- 在小鼠中建立了急性肝损伤模型,使用不同剂量的甲基.
- 组织病理学分析,血清生化标志物和分子分析被用于评估肝损伤和途径激活.
主要成果:
- 甲基暴露导致了剂量依赖的肝损伤,由细胞病理学和肝酶升高证明.
- 观察到铁亡的证据,包括铁积累增加和关键铁亡标记物的表达改变 (GPX4,SLC7A11).
- 暴露于MeHg引发了显著的氧化应激,炎症 (NF-κB/NLRP3通路) 和MAPK信号的激活 (p38/ERK1/2).
结论:
- 甲基通过铁,氧化应激,炎症和MAPK信号的复杂相互作用诱导急性肝损伤.
- 这些发现提供了关于MeHg肝毒性机制的见解,并建议潜在的治疗点.
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