塞拉斯可以通过激活AMPK通路来减轻内分泌网膜应激来改善饮食诱导的肥胖小鼠的内皮功能
Cheng Yu1, Weihong Lin1, Jing Yang1
1Department of Cardiology, Fujian Medical University Union Hospital, Fujian Cardiovascular Medical Center, Fujian Institute of Coronary Artery Disease, Fujian Cardiovascular Research Center, Fuzhou, Fujian, 350001, P. R. China.
Molecular medicine (Cambridge, Mass.)
|June 11, 2025
概括
塞拉斯特通过改善内皮功能来防止饮食引起的肥胖. 它通过激活AMPK来起作用,减少细胞内膜网膜的压力,并促进氧化的产生,这对心血管健康至关重要.
科学领域:
- 心血管研究研究心血管研究
- 内皮细胞功能 内皮细胞功能
- 肥胖研究 肥胖研究
背景情况:
- 饮食诱导的肥胖 (DIO) 显著导致内皮功能障碍.
- 塞拉斯特是一种天然化合物,具有抗炎和抗氧化特性,具有潜在的心血管益处.
- 塞拉斯特在缓解DIO内皮功能障碍中的确切机制尚不清楚.
研究的目的:
- 在饮食诱导的肥胖的小鼠模型中研究塞拉斯特对内皮功能障碍的保护作用.
- 阐明潜在的分子机制,重点关注AMPK途径,内质网膜 (ER) 应力和氧化 (NO) 生产.
主要方法:
- C57BL/6小鼠接受了高脂肪饮食,并接受了切拉斯特治疗.
- 在主动脉环中使用线筋图进行了内皮依赖放松 (EDR) 的评估.
- 评估了AMP激活蛋白激酶 (AMPK) 酸化,ER压力标志物和活性氧物种 (ROS).
主要成果:
- DIO小鼠表现出EDR受损,AMPK酸化降低,ER压力增加和ROS升高.
- 塞拉斯托尔治疗逆转了这些障碍,恢复EDR并使细胞压力标志物正常化.
- 塞拉斯特的有益作用取决于AMPK激活,正如AMPK抑制剂和AMPKα缺乏小鼠的实验所示.
结论:
- 塞拉斯可以改善饮食引起的肥胖症中的内皮功能障碍.
- 塞拉斯通过激活AMPK通路来发挥其保护作用,从而抑制ER压力并增强氧化的产生.
- 这些发现凸显了醇作为肥胖相关心血管并发症的潜在治疗剂.
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