慢性β3上腺激动剂治疗改善了老年小鼠的大脑微血管内皮功能和认知能力
bioRxiv : the preprint server for biology
|July 19, 2024
概括
使用β3-上腺激动剂的热能刺激改善了老年小鼠的大脑内皮功能和认知能力. 这种干预通过增强大脑血液流动和减少神经炎症来缓解与年龄相关的认知衰退.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 心血管生物学 心血管生物学
背景情况:
- 与年龄相关的血管认知障碍 (VCI) 与微血管内皮功能障碍有关.
- 来自脂肪功能障碍的不良循环因素有助于VCI病变.
- 非细胞自主机制驱动内皮功能障碍和认知衰退.
研究的目的:
- 调查热能刺激是否可以改善老化中的大脑内皮功能和认知.
- 评估β3-上腺素激动剂 (CL) 对与年龄相关的认知衰退的影响.
主要方法:
- 年龄较大的C57BL/6J小鼠 (18个月大) 用盐水或CL治疗了6周.
- 功能分析评估了内皮功能,神经血管合和大脑葡萄糖吸收.
- 用放射臂水迷宫和Y迷宫测试来评估认知表现.
主要成果:
- 在老年小鼠中,CL治疗增强了神经血管合和大脑葡萄糖吸收.
- 血脑屏障泄漏和神经炎症的CL减弱.
- 改善的微血管功能与增强的认知表现相关.
结论:
- 治疗β3-上腺激动剂改善了老化中的大脑微血管内皮功能障碍.
- 这种干预显示出治疗与年龄相关的认知衰退的潜力.
- 热能刺激可能是VCI的可行的治疗策略.
相关概念视频
Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists
114
Cognitive enhancers, also known as "smart drugs," are substances used to enhance memory, mental alertness, and concentration. These can be natural or synthetic and improve cognition in conditions like Alzheimer's disease (AD) and other neurodegenerative diseases. Some common examples include caffeine, amphetamines, methylphenidate, modafinil, arecoline, donepezil, vortioxetine, and piracetam. These enhancers work on the principle of synaptic plasticity and altered circuit function.
114
Alzheimer's Disease: Treatment
172
Alzheimer's Disease (AD), a neurodegenerative disorder, is pathologically identified by amyloid plaques and neurofibrillary tangles composed of tau protein. AD pharmacotherapy aims to manage cognitive symptoms, delay disease progression, and treat behavioral symptoms. The treatment is primarily symptomatic and palliative, with no definitive disease-modifying therapy available. Cholinesterase inhibitors, including donepezil (Aricept), rivastigmine (Exelon), and galantamine (Razadyne), are...
172


