拉巴胺逆转了肝脏对饮食诱导的代谢压力的反应,这种压力因衰老而放大
Aaron Havas1, Adarsh Rajesh1, Xue Lei1
1Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA.
Aging cell
|February 7, 2026
概括
衰老加剧了高脂肪饮食导致的肝病风险,但拉巴胺治疗可以逆转这些影响. 这项研究表明,拉巴胺可以减轻与年龄相关的肝损伤和与代谢功能障碍相关的脂肪性肝病 (MASLD) 的进展.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 衰老的研究研究.
- 代谢性疾病是一种代谢性疾病.
背景情况:
- 老龄化增加了对代谢压力和慢性肝病的敏感性.
- 衰老,代谢压力因素和干预措施之间的相互作用尚未完全理解.
研究的目的:
- 为了检查年轻小鼠与老小鼠对高脂肪饮食 (HFD) 的肝脏反应.
- 评估拉巴胺是否可以减轻HFD对肝脏的年龄加剧的影响.
主要方法:
- 年轻的 (7个月大) 和老的 (25个月大) C57BL/6雄性小鼠在9周内养HFD的比较.
- 整个肝脏和分离的肝细胞的转录组分析.
- 评估肝脏肥胖症,炎症和基因表达变化.
- 在老化小鼠中对拉帕米辛治疗的评估.
主要成果:
- 较老的小鼠表现出更严重的HFD诱导的代谢相关脂肪肝炎 (MASH),包括肥胖症,炎症和转录失调.
- 衰老放大了HFD驱动的炎症基因表达和抑制的代谢途径.
- 拉巴胺逆转了大多数HFD诱导的转录变化,减少了肝硬化,体重,以及肝细胞癌风险标志.
结论:
- 衰老加剧了肝脏对HFD代谢压力的敏感性.
- 拉帕米辛是一种有前途的治疗药物,可以抵消与年龄相关的肝功能障碍和MASLD进展.
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