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氧化低密度脂蛋白和脂聚糖增加冠状动脉斑块在高胆固醇微葡萄酒中的脆弱性

S Nooti¹, V Rai¹, M M Radwan¹

¹Department of Translational Research, Western University of Health Sciences, Pomona, California 91763, USA.

Cardiology and cardiovascular medicine

|August 14, 2023

概括

氧化低密度脂蛋白 (oxLDL) 和脂聚糖 (LPS) 在动脉样硬化猪动脉中促进脆弱的斑块形成. 在诱导不稳定的动脉样硬化斑块方面,OxLDL表现出比LPS更大的功效.

科学领域:

心血管生物学心血管生物学
动脉样硬化研究动脉样硬化研究
炎症疾病的机制炎症疾病的机制

背景情况:

动脉样硬化是一种慢性炎症性疾病.
高胆固醇血症是动脉样硬化的一个重要危险因素.
了解加剧斑块脆弱性的因素至关重要.

研究的目的:

为了比较脂聚糖 (LPS) 和氧化低密度脂蛋白 (oxLDL) 在诱导动脉样硬化斑块形成和脆弱性的疗效.
调查LPS和oxLDL对高胆固醇贫血猪动脉病变的影响.

主要方法:

患有高胆固醇血的尤卡坦微猪接受了气球血管整形术,以诱导动脉损伤.
脂聚糖 (LPS) 或氧化低密度脂蛋白 (oxLDL) 在受伤部位内注射.
使用血管成像 (超声波,血管造影,OCT) 和组织形态学来评估斑块特征和严重程度.

主要成果:

无论是LPS还是oxLDL治疗,都导致斑块形成的增加以及不稳定的斑块的特征 (死核,细纤维盖).
与LPS相比,氧化低密度脂蛋白 (oxLDL) 诱导了更严重的病变和更大的斑块脆弱性.
实验室研究表明,在用LPS和oxLDL治疗的细胞中,炎症和斑块脆弱性生物标志物的表达增加.

结论:

血管形成术诱导的损伤与局部LPS或oxLDL的管理相结合,有效地在猪中产生脆弱的动脉样硬化斑块.
在这个模型中,氧化低密度脂蛋白 (oxLDL) 在促进易受损伤的斑块发育方面比LPS更有效.
这些发现强调了oxLDL在加剧动脉样硬化斑块不稳定的作用.

关键词:

动脉样硬化是一种动脉样硬化.慢性炎症是一种慢性炎症.超胆固醇贫血的猪类动物脂聚糖类糖化物脂聚糖类糖化物氧-LDL是一种LDL.斑块稳定斑块稳定斑块稳定易受伤害的斑块是容易受伤害的

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