氧化甾醇是胆固醇的氧化衍生物 ,它来源于食物中已氧化的胆固醇和体内胆固醇的自身氧化。在体内主要存在于氧化修饰的脂蛋白中。它具有多种生物学功能 ,可调节胆固醇的代谢、促进巨噬源性泡沫细胞形成、损伤血管内皮细胞和平滑肌细胞 ,可能是致动脉粥样硬化的病因 Oxidized sterol is an oxidized derivative of cholesterol that is derived from the oxidation of oxidized cholesterol and in-body cholesterol in foods. Mainly present in oxidatively modified lipoproteins in the body. It has a variety of biological functions, can regulate cholesterol metabolism, promote the formation of macrophage-derived foam cells, damage to vascular endothelial cells and smooth muscle cells, may be the cause of atherosclerosis