内皮功能障碍有助于与胰岛素类生长因子结合蛋白-6相关的慢性细胞衰老,在自发高血压的小鼠模型中
Yuqi Zhang1,2, Karen Ching1, Lanlan Zhang1
1Department of Biomedical Engineering The Hong Kong Polytechnic University Kowloon Hong Kong China.
Journal of the American Heart Association
|December 17, 2025
概括
高血压通过影响血管造成关节损伤,导致骨关节炎. 用卡波普里尔治疗高血压可以防止这种软骨损失和软骨细胞衰老.
科学领域:
- 血管生物学 血管生物学
- 类风湿病学 类风湿病学
- 分子生物学分子生物学
背景情况:
- 流行病学研究将高血压和骨关节炎联系起来.
- 血管病理与非血管性关节软骨损失有关.
研究的目的:
- 阐明血管病理是如何触发关节软骨损失的.
- 为了比较自发高血压大鼠与正常高血压的Wistar京都大鼠的血管和关节表型.
- 研究将内皮功能障碍与骨关节炎联系起来的分子机制.
主要方法:
- 通过血压监测和光声成像来评估内皮功能.
- 使用放射学和组织学检查评估关节损伤.
- 分析了内皮基因表达 (RNA-seq) 和机密体 (蛋白质组) 以确定冠状细胞衰老的关键因素.
- 利用卡普托普里尔在体外和体内测试治疗潜力.
主要成果:
- 自发高血压的老鼠比对照群更早地表现出更高的血压,关节缺氧和内皮氧化应激.
- 内皮功能障碍之前的结构性关节损伤.
- 在高血压大鼠中观察到类似于骨关节炎的病理,包括衰老的软骨细胞和软骨退化,并被卡普托普里尔缓解.
- IGFBP,特别是IGFBP6,在内皮细胞中被上调,并诱导了状细胞衰老.
结论:
- 系统性血管功能障碍,以内皮功能障碍和IGFBP上调 (例如,IGFBP6) 为特征,有助于关节损伤和骨关节炎.
- 向内皮功能障碍是预防关节结构损伤的潜在治疗策略.
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