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晚期糖基化终产物在多发性硬化炎性反应中的作用

2018-12-18牛文志胡风云

中国现代医生 2018年23期

牛文志 胡风云

[摘要] 多发性硬化(MS)是中枢神经系统(CNS)脱髓鞘病变。炎性反应是MS发展的重要因素,并可诱发小胶质细胞、巨噬细胞及CNS内星形胶质细胞的异常糖酵解。糖酵解过程中生成的毒性物质二羰基化合物甲基乙二醛(MGO)和乙二醛(GO)可与蛋白质中的氨基酸反应生成稳定的糖基化终末代谢产物(AGEs)。多发性硬化患者炎性反应使糖酵解增强,AGEs形成增加,而AGEs与糖基化终末产物受体(RAGE)结合进一步激活炎性反应。研究表明多发性硬化患者血液和脑组织中AGEs水平增加。因此,AGEs 参与了多发性硬化的炎性反应,在MS的病理过程中具有重要的作用。本文就AGEs在MS中的作用作一综述。

[关键词] 多发性硬化;糖基化终末代谢产物;糖基化终末产物受体;糖酵解

[中图分类号] R744.51 [文献标识码] A [文章编号] 1673-9701(2018)23-0159-05

The role of advanced glycation end products on inflammatory response in multiple sclerosis

NIU Wenzhi1 HU Fengyun2

1.Shanxi Medical University, Taiyuan 030012, China; 2.Department of Neurology, Shanxi Provincial People's Hospital, Taiyuan 030012, China

[Abstract] Multiple sclerosis(MS) is a demyelinating disorder of the central nervous system (CNS). The inflammatory response is an important factor in the development of MS, and can induce abnormal glycolysis of microglia, macrophages, and astrocytes in the CNS. The toxic substances dicarbonyl compounds methyl glyoxal (MGO) and glyoxal (GO) generated during glycolysis react with the amino acids in the protein to form stable advanced glycation end products (AGEs).The inflammatory response in patients with multiple sclerosis enhances glycolysis and increases the formation of AGEs, whereas the binding of AGEs to receptors for glycation endproducts(RAGE) further activates inflammatory responses. Studies have shown the levels of AGEs in blood and brain tissue in multiple sclerosis patients increase. Therefore, AGEs are involved in the inflammatory response in multiple sclerosis and play an important role in the pathogenesis of MS. The role of AGEs in MS will be reviewed.

[Key words] Multiple sclerosis; Glycosylation end metabolites; Advanced glycation end products; Glycosylation end product receptors; Glycolysis

多發性硬化(multiple sclerosis,MS)是中枢神经系统(central nervous system,CNS)脱髓鞘病变。患者多在成年早期发病,表现为反复发作的神经功能障碍,多次缓解复发,病情每况愈下,甚至丧失工作能力,生活质量降低,背负沉重的医疗负担。炎性反应参与了多发性硬化的病理过程。研究表明MS患者血液和脑组织中糖基化终末代谢产物(advanced glycation endproducts,AGEs)水平增加。AGEs 可能参与了MS的炎性反应并在其病理过程中发挥了重要作用。目前关于AGEs在多发性硬化症中的作用日益受到关注。

1 MS和AGEs

1.1 MS

多发性硬化(MS)是一种中枢神经系统的炎性脱髓鞘疾病,多于成年早期发病,女性多见,分为复发-缓解型(relapsing-remitting,RR)、继发进展型(secondary progressive,SP)、原发进展型(primary-progressive,PP)、进展复发型(progressive-relapsing ,PR)。可有多种临床表现,如视力障碍、感觉异常、肢体无力、共济失调等。……

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