游离脂肪酸与组织细胞损伤相关性的研究进展

The progress on the association of tissue and cell damage with free fatty acids

游离脂肪酸(free fatty acids,FFA)是脂肪的代谢产物,能刺激中性粒细胞产生活性氧,如过氧化氢和次氯酸。研究表明FFA与心肌、血管内皮、肝、肺等组织损伤密切相关。红细胞损伤的机制则是细胞膜表面的多不饱和脂肪酸和胞内血红蛋白受到活性氧的氧化过程。高浓度FFA可导致高活性反应分子氧簇活性氧生成增多,从而启动了氧化应激机制,活性分子可直接氧化和损伤脫氧核醣核酸、蛋白质、脂类等分子。文中综述近年来对FFA与红细胞损伤之间相关性的研究进展,为研究氧化性贫血提供新方向。

Free fatty acids generated from the metabolites of fat have been demonstrated to stimulate the neutrophils to produce reactive oxygen species （ ROS） such as hydrogen peroxide and chlorous peroxide .It has shown that free fatty acid is closely related with myocardial, vascular endothelium, liver, lung and other tissue damage.The mechanism of erythrocyte injury is oxidation of mem-brane polyunsaturated fatty acids and cytosolic hemoglobin by ROS .High levels of free fatty acids can increase the formation of active reaction molecular ROS , thus initiating the oxidative stress reaction .Active molecules can oxalate and damage the DNA , protein, lipid and other molecules of RBC .It has revealed the relationship between free fatty acids and erythrocytes injury , which provided a new di-rection in the research of oxidative anemia .This article reviews the advances in the research of this subject in recent years .