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慢性纳米塑料暴露促进了代谢功能障碍相关的脂肪性肝病的发展和进展
Jinsol Han1, Hayeong Jeong2, Chanbin Lee1
1Institution of Systems Biology, Pusan National University, Pusan, Republic of Korea.
概括
长期暴露在塑料纳米颗粒 (NP) 中会在代谢功能障碍相关的脂肪性肝病 (MASLD) 中恶化肝损伤和纤维化. NP激活了刺信号,促进了肝病的进展,增加了疾病的脆弱性.
科学领域:
- 环境毒理学环境毒理学
- 肝病学 肝病学是一种肝病学.
- 分子生物学分子生物学
背景情况:
- 塑料颗粒,特别是纳米颗粒 (NP),是一个日益严重的环境问题,可能会暴露人类.
- 摄入的NP在肝脏中积累,通过氧化应激和代谢功能障碍引起肝毒性.
- 关联慢性NP暴露与代谢功能障碍相关的脂肪性肝病 (MASLD) 进展的机制尚未完全理解,尽管 (Hh) 信号涉及.
研究的目的:
- 研究长期口服暴露于塑料纳米颗粒 (NP) 对MASLD的病理生理影响.
- 阐明Hh信号在NP诱导的肝损伤和纤维化恶化中的作用.
主要方法:
- 在小鼠中,通过饮用水口服NP,持续12周.
- 用一种缺乏胆,L-氨基酸定义的高脂肪饮食 (CDAHFD) 来诱导MASLD.
- 分析了肝脏组织的脂质积累,亡,纤维化和HH信号通路激活.
主要成果:
- 长期的NP暴露加剧了CDAHFD引起的肝损伤,特别是纤维化.
- NP增加了肝细胞中的脂质积累和亡,其效应被脂毒性放大.
- NP治疗提高了Hh信号,增加了Sonic Hh表达,触发了肝星细胞 (HSC) 中的Hh信号,促进了纤维化.
结论:
- 长期的NP暴露增加了对MASLD进展的敏感性.
- NP在肝病的发展和进展中起到有害因素的作用.
- 准Hh信号可能为NP诱导的肝损伤提供治疗策略.
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