糖尿病通过影响大动脉直径和脉动负荷,加剧了中国老年人的心血管重塑
Yuqi Jiang1, Ziwei Zhao1, JunFeng Jiang1
1Department of Geriatrics, The First Hospital of China Medical University, 155 Nanjing North Street, Shenyang, 110001, China.
Scientific reports
|September 1, 2025
概括
糖尿病会损害大动脉扩张,增加脉动负荷和左心室缩. 这项研究揭示了糖尿病对大动脉大小产生负面影响的途径,
科学领域:
- 心血管医学
- 内分泌学
- 老年学
背景情况:
- 动脉硬化通过增加脉动负荷和左心室工作负荷对心血管健康产生负面影响.
- 大动脉扩张可以作为脉动过载的补偿机制,但糖尿病可能会损害这种能力.
- 之前的研究表明糖尿病与大动脉直径之间存在负相关性,
研究的目的:
- 在老年患者中研究糖尿病,大动脉直径和左心室缩 (LVH) 之间的关系.
- 探索动脉硬和脉压在糖尿病和LVH之间的关联中的作用.
主要方法:
- 在271名老年患者的回顾性研究中,按糖尿病状况分层.
- 用于测量主动脉和心脏几何学.
- 腕脉冲波速度 (baPWV) 评估了动脉硬度;脉冲压 (PP) 测量了脉冲负荷.
- 线性回归和调解分析检查了糖尿病,大动脉直径 (AoRi),baPWV,PP和左心室质量指数 (LVMI) 的相关性.
主要成果:
- 糖尿病,禁食血糖 (FPG) 和HbA1c与较小的大动脉直径 (AoRi) 独立相关.
- 动脉硬度 (baPWV) 与AoRi正相关,而AoRi与脉压 (PP) 有负相关.
- 调解分析显示,AoRi减弱了PP对LVMI的影响,并放大了糖尿病对PP的影响.
- 通过以下途径观察到糖尿病对LVMI的显著间接影响:糖尿病 → AoRi → PP → LVMI.
结论:
- 在老年人中,糖尿病与大动脉扩张障碍和左心室缩增加有关.
- 大动脉直径在糖尿病和心血管应变之间的关系中起着调解作用,影响左心室的工作量.
- 这些发现表明一种病理机制,即糖尿病诱导的大动脉扩张的损伤有助于心肌缩的进展.
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