预防和治疗糖尿病血管并发症的新靶点高级糖基化终产物受体

被引:4
作者
张红梅
李学军
机构
[1] 北京大学医学部基础医学院药理学系,北京大学医学部基础医学院药理学系北京,北京
关键词
高级糖基化终产物受体; 糖尿病; 血管并发症;
D O I
10.13220/j.cnki.jipr.2002.01.015
中图分类号
R587.1 [糖尿病];
学科分类号
1002 ; 100201 ;
摘要
高级糖基化终产物受体 (RAGE)是细胞膜上的免疫球蛋白超家族成员 ,可与多种相关配体结合而产生不同的病理作用。RAGE配体之一为糖化氧化产物 ,即高级糖基化终产物 (AGE)。AGE主要产生于血浆、血管壁及其他与糖尿病并发症相关的部位。AGE与其受体结合以后会上调受体的表达 ,启动一个正反馈环 ,从而使细胞持续处于激活状态 ,最终导致组织损伤。RAGE可表达于内皮细胞、平滑肌细胞、单核细胞和神经细胞等。体内外实验均证明阻断AGE RAGE相互作用可抑制并部分逆转糖尿病大鼠早期血管通透性增高。在糖尿病伴有加速进行的动脉粥样硬化动物模型中 ,注射可溶性RAGE(sRAGE)阻断配体和受体的结合后 ,可完全抑制血管损伤的进展 ,同时还可以观察到在不改变血糖和血脂的情况下 ,动脉粥样硬化有所好转。目前的研究已表明 ,在糖尿病血管并发症发病机制中 ,RAGE起着重要作用 ,阻断其作用有可能成为预防和治疗糖尿病血管并发症的新途径。
引用
收藏
页码:49 / 52
页数:4
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