基础科学和病原发生学
Carla Rocha Dos Santos1, Mackenzie J Barnett1, Ross A McDevitt1
1National Institute on Aging/National Institutes of Health (NIA/NIH), Baltimore, MD, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
用奎尔塞丁 (QRC) 和达沙替尼 (DAS) 治疗老年人保护了心脏功能,并减少了雌性大鼠的焦虑,但没有影响早期血管衰老. 观察到心脏结构和注意力表现之间的联系.
科学领域:
- 老年学是指老年学的学科.
- 心血管研究研究心血管研究
- 神经科学是一个神经科学.
背景情况:
- 诸如高血压和动脉硬等心血管风险因素有助于认知能力下降.
- 对于达尔盐敏感的老鼠表现出与年龄相关的血管衰老和认知障碍.
- 以前的研究表明,老年化剂QRC和DAS改善了雄性大鼠的血管衰老和认知能力.
研究的目的:
- 研究QRC和DAS对血管衰老,心脏参数和雌性DSS大鼠的认知功能的影响.
- 测试QRC和DAS治疗可以改善血管衰老并改善雌性DSS大鼠的认知能力的假设.
主要方法:
- 六个月大的雌性DSS大鼠接受了安慰剂,QRC或QRC+DAS6个月.
- 在治疗的最后2个月中,DAS被管理.
- 评估系统血压,动脉硬,心脏功能通过心声回声,认知功能,和焦虑类行为.
主要成果:
- 无论QRC还是QRC+DAS都没有影响血压或动脉硬.
- 这两种治疗都改善了心脏功能,增加了射出分数和分数缩短.
- QRC+DAS减少了相对左心室壁厚度;认知功能没有显著差异.
- 在QRC和QRC+DAS两组中,表现出类似焦虑的行为减少.
- 注意力表现与心脏重塑标志物相关,如左心室相对壁厚和喷射分数.
结论:
- 使用QRC或QRC+DAS的慢性老年化治疗保护了心脏功能,并减少了雌性DSS大鼠的焦虑.
- 这些治疗没有影响早期血管衰老标志物 (血压,动脉硬).
- 观察到的相关性表明,潜在的心脑相互作用会影响注意力表现.
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