重复使用阿片类药物调节了阿尔茨海默病小鼠模型中的微细胞活动和粉样蛋白β清除
Joseph V Gogola1,2,3, Sung Won Stephanie Wee1, Alfredo J Garcia1
1Department of Medicine, The University of Chicago, Chicago IL USA.
bioRxiv : the preprint server for biology
|November 26, 2025
概括
慢性芬太尼使用会影响大脑炎症和阿尔茨海默病 (AD) 病理. 在AD小鼠模型中,芬太尼使用通过增强微质清除来减少粉样质斑块,这表明物质使用和神经退行之间存在复杂的相互作用.
科学领域:
- 神经科学是一个神经科学.
- 神经免疫学 神经免疫学
- 神经退行性疾病 神经退行性疾病
背景情况:
- 非法使用阿片类药物,包括芬太尼,与认知能力下降和痴呆症有关.
- 阿片类药物使用与早期阿尔茨海默病 (AD) 具有病理特征,这表明有机关联.
- 神经免疫反应,特别是微质活动,在AD病变发生过程中起着至关重要的作用.
研究的目的:
- 调查慢性芬太尼使用对神经炎症,微质活性和粉样蛋白负担的影响.
- 在野生型和AD的转基因小鼠模型 (APPPS1-21) 中检查这些效应.
主要方法:
- 长期使用芬太尼 (20天) 给野生型和APPPPS1-21小鼠.
- 评估神经免疫状态,微质激活标志物和粉样β (Aβ) 病理.
- 量化可溶性Aβ和Aβ斑块负担的量化.
主要成果:
- 在野生型小鼠中,芬太尼诱导了促炎状态,但没有改变与疾病相关的微质细胞.
- 在APPPS1-21小鼠中,芬太尼尔将神经免疫状态转向抗炎.
- 在APPPS1-21小鼠中使用芬太尼增加了Aβ斑块的微质聚类和激活,增强了Aβ内部化,减少了可溶性Aβ,并降低了整体斑块负担.
结论:
- 慢性芬太尼使用显著改变神经免疫反应和AD相关的病理.
- 芬太尼能够使微质细胞在AD小鼠模型中增强Aβ清除,从而可能改变疾病的发展轨迹.
- 药物使用可以重塑神经退行性疾病中的神经免疫格局,需要定制的治疗策略.
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