代谢压力和年龄驱动炎症和小鼠和人类的认知衰退
Sarah E Elzinga1,2, Kai Guo1, Ali Turfah3
1Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA.
概括
像肥胖和2型糖尿病 (T2D) 这样的代谢压力驱动认知障碍 (CI). 微质驱动的炎症,特别是涉及分泌的蛋白1 (SPP1),在这个过程中起着关键作用.
科学领域:
- 神经科学是一个神经科学.
- 代谢障碍 代谢障碍 代谢障碍
- 免疫学 免疫学 免疫学
背景情况:
- 代谢性压力因素 (肥胖,代谢综合征,糖尿病前期,2型糖尿病 [T2D]) 与认知障碍 (CI) 相关,包括阿尔茨海默病 (AD).
- 潜在的机制,特别是涉及免疫失调和微质炎症,尚未完全理解.
研究的目的:
- 研究代谢压力对认知和大脑炎症的纵向影响.
- 探索微质介导炎症在代谢驱动的认知障碍中的作用.
主要方法:
- 使用高脂肪饮食 (HFD) 鼠标模型来评估纵向新陈代谢和认知.
- 在HFD小鼠中分析了末端大脑炎症和空间转录学.
- 河马空间转录学和单细胞RNA测序在死后的人类脑组织上进行,来自AD,T2D和对照对象.
主要成果:
- 在小鼠中,HFD诱导了渐进的代谢功能障碍和认知障碍,伴随着炎症变化.
- 在HFD小鼠和人类AD/T2D大脑中的基因表达特征显示了相似之处,包括微质中促炎基因分泌的脂蛋白1 (SPP1) 的上调.
- 空间转录学揭示了HFD小鼠和人类受试者的大脑中的一种促炎环境.
结论:
- 代谢性压力导致持续的代谢和认知障碍.
- 微质介导的炎症,具有SPP1的潜在作用,与代谢驱动的认知障碍有关.
- 分泌蛋白1 (SPP1) 被确定为与代谢障碍相关的认知障碍的潜在治疗标.
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