早期的认知干预在老年TgF344-AD大鼠中保留了大脑功能,具有性别特异性的影响
Julia Casanova-Pagola1, Federico Varriano1, Xavier López-Gil2
1Brain Connectivity and Neuroimaging Lab, Institute of Neurosciences, Faculty of Medicine and Health Sciences, University of Barcelona, Carrer de Casanova 143, 08036 Barcelona, Spain.
早期的认知刺激可以提高大脑对抗阿尔茨海默病 (AD) 进展的弹性. 虽然对男性有益,但认知训练对女性的影响有限,突出了AD的性别特异性机制.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 衰老研究研究 衰老研究
背景情况:
- 阿尔茨海默病 (AD) 涉及渐进性的认知能力下降.
- 认知储备可以减轻AD的影响.
- 研究早期认知刺激对大脑功能的影响至关重要.
研究的目的:
- 为了确定长期认知刺激是否在粉样蛋白沉积之前在雄性和雌性TgF344-AD大鼠中保持大脑功能.
- 探索对认知训练的反应中的性别特异性差异.
主要方法:
- TgF344-AD和野生型 (WT) 鼠接受了认知训练或没有接受训练.
- 使用休息状态fMRI,新型物体识别测试和分子分析.
- 评估了功能连接,记忆,突触可塑性,抑制信号和微质反应.
主要成果:
- 女性表现出比男性更高的基线任务参与度和突触蛋白水平.
- 认知训练在男性中增强了连接和记忆力,在女性中只有很小的好处.
- 训练过的转基因大鼠保持了脑内-海马连接;雄性表现出持续的可塑性和减少了对素阳性内神经元.
- 早期的培训促进了微质的招募,并降低了对斑块的反应性.
结论:
- 早期和持续的认知刺激在AD的背景下增强了大脑的弹性.
- 性别特定的机制显著影响认知干预的结果.
- 认知训练为缓解AD相关的大脑变化提供了潜在的好处,特别是在男性中.
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