极地脂质通过通过血小板激活因子受体 (PTAFR) 调制来减少星体细胞的促炎信号传递来改变阿尔茨海默病的病理学
Sakshi Hans1,2, Janelle E Stanton1,2, Ann Katrin Sauer1,2,3
1Department of Biological Sciences, University of Limerick, Limerick, V94PH61, Ireland.
Lipids in health and disease
|April 20, 2024
概括
来自鱼类和乳制品的极性脂质减少了阿尔茨海默病模型中的炎症和粉样蛋白β积累. 这些发现表明,饮食策略可能降低痴呆症风险.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 营养科学 营养科学
背景情况:
- 阿尔茨海默病 (AD) 涉及由粉样β (Aβ) 斑块和激活的星体细胞驱动的神经炎症.
- 星球细胞有助于炎症和Aβ病理,需要策略来调节它们的激活.
- 血小板激活因子受体 (PTAFR) 途径被确定为天体细胞激活的关键媒介.
研究的目的:
- 调查极性脂质 (PLs) 对于它们在星球细胞中抑制PAF途径的潜力.
- 确定PLs是否可以在体外减弱星细胞前炎信号和AD相关的病理.
- 探索PLs的饮食来源,如鱼类和乳制品,以获得神经保护作用.
主要方法:
- 使用食品级技术从鱼和酸奶中提取PLs.
- 通过LC/MS分析了PL脂肪酸概况.
- 评估了PL对天体细胞激活,反应性氧物种 (ROS) 生成和Aβ积累在体外的影响.
- 评估了天体细胞分泌体对老年神经元的影响.
主要成果:
- 鱼和酸奶中的PLs显著降低了天体细胞激活,ROS生成和细胞外Aβ积累.
- 与对照人群相比,暴露于PL治疗天体细胞的秘密体的神经元显示细胞健康状况有所改善.
- 鱼衍生PLs在Aβ暴露的背景下表现出神经保护作用.
结论:
- 通过抑制星体细胞中PAF通路,PLs具有抗炎作用.
- 摄入鱼类和乳制品等富含PL的食物可能提供一种减轻痴呆风险的饮食方法.
- 这项研究揭示了一个新的机制,将饮食PL与减少神经炎症和AD病理联系起来.
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