肥胖糖尿病患者的脂肪体促进内皮功能障碍和表面腔损失
Imaduddin Mirza1, Mohamed Haloul1, Chandra Hassan2
1Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA.
Cells
|October 27, 2023
概括
肥胖糖尿病的脂肪体含有高水平的葡萄糖脂 (GSL),通过破坏洞穴和信号通路来损害内皮细胞,损害血管功能.
科学领域:
- 脂质代谢 脂质代谢 是一种
- 细胞生物学 细胞生物学
- 心血管研究的心血管研究.
背景情况:
- 葡萄糖脂 (GSLs) 涉及到心血管疾病.
- 糖尿病和肥胖症创造了一个具有高GLS水平的炎症性脂肪细胞微环境.
研究的目的:
- 评估来自肥胖糖尿病患者 (OB-T2D) 脂肪组织 (脂肪体) 的细胞外囊中的GLS含量.
- 为了研究这些脂肪体对内皮细胞功能的影响.
主要方法:
- 内皮细胞接触到来自OB-T2D和健康受试者的脂肪体.
- 评估了洞穴完整性,Src-激酶和洞穴蛋白-1 (cav-1) 酸化,以及内皮氧化合成酶 (eNOS) 活性.
- 评估了氧化产量,剪切反应,白蛋白摄入量和流动诱导的扩张.
主要成果:
- 在OB-T2D脂肪体中,GLS (LacCer,GM3) 比健康脂肪体高.
- OB-T2D脂肪体诱导了cav-1酸化,洞穴的损失,eNOS脱,以及过氧酸盐的产生.
- 这些效应被Src酶抑制阻断,并且在GLS贫乏脂肪体中不存在.
- OB-T2D脂肪体减少了氧化的产生,剪切反应和白蛋白摄入量,损害了血管扩张.
结论:
- 来自OB-T2D受试者的脂肪体携带有害的GLS载荷.
- 这种GSL货物破坏了内皮洞穴和相关的信号通路.
- 这种干扰有助于内皮功能障碍和心血管疾病的发展.
关键词:
这就是Src 激酶.脂肪体是脂肪体中的一个.洞穴 (caveolae) 是一个洞穴.洞穴-1 (cav-1) 洞穴-1 (cav-1) 洞穴-1 (cav-1) 洞穴-1 (cav-1) 洞穴-1 (cav-1) 洞穴-1) 洞穴-1 (cav-1) 洞穴-1 (cav-1) 洞穴-1) 洞穴-1 (cav-1) 洞穴-1) 洞穴-1 (cav-1) 洞穴-1 (cav-1) 洞穴-1) 洞穴-1 (cav-1) 洞穴-1) 洞穴-1 (cav-1) 洞穴-1 (cav-1)内皮质功能障碍 在内皮质功能障碍体内氧化合成酶 (eNOS) 的作用.细胞外囊泡中的细胞外囊泡.流量诱导膨胀 (FID) 是一种葡萄糖脂类 (GSLs) 是一种剪切压力的压力.更多相关视频
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