心力衰竭引起的认知功能障碍是由通过二型氨酸受体的细胞内Ca2+泄漏介导的
Haikel Dridi1, Yang Liu2, Steven Reiken2
1Department of Physiology and Cellular Biophysics, Clyde and Helen Wu Center for Molecular Cardiology, Columbia University Vagelos College of Physicians & Surgeons, New York, NY, USA. dh2756@cumc.columbia.edu.
Nature neuroscience
|July 10, 2023
概括
心力衰竭通过大脑中漏洞的RyR2通道引起认知功能障碍. 针对RyR2的治疗,如稳定剂或β阻塞剂,可以防止这种由心力衰竭引起的认知衰退.
科学领域:
- 神经科学是一个神经科学.
- 心脏病学 心脏病学
- 分子生物学分子生物学
背景情况:
- 认知功能障碍 (CD) 显著影响心力衰竭 (HF) 患者的生活质量和治疗坚持.
- 氨酸受体2型 (RyR2) 在HF相关的CD中的作用尚不清楚.
研究的目的:
- 调查RyR2在心力衰竭中的认知功能障碍中的参与.
- 探索由HF诱导的CD中 RyR2 功能障碍背后的机制.
主要方法:
- 来自HF的人类和小鼠模型中海马神经元的分析.
- 评估RyR2的翻译后修饰 (PTMs),包括酸化,氧化和calstabin2水平.
- 在HF小鼠模型中针对RyR2的治疗干预措施的评估.
主要成果:
- 来自HF个体和小鼠的海马神经元中的RyR2通道表现出PTM,导致细胞内Ca2+泄漏.
- 超上腺体信号传递和TGF-β通路激活有助于RyR2 PTMs.
- 用RyR2稳定剂 (S107),propranolol或SD-208进行治疗,并使用保护RyR2-p.Ser2808Ala小鼠免受HF诱导的CD的治疗.
结论:
- 由HF诱导的认知功能障碍与大脑中泄漏的RyR2通道有关.
- 由超上腺体信号传导和TGF-β通路驱动的RyR2 PTM是关键机制.
- 准RyR2为心脏性痴呆症提供了一个潜在的治疗策略.
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