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临床谱,病理和抗LGI4抗体阳性自身免疫性节节病变的机制
Xu Zhang1, Jun-Ichi Kira1,2,3, Akira Yokote2
1Translational Neuroscience Research Center, Graduate School of Medicine, International University of Health and Welfare, Okawa, Japan.
Neurology(R) neuroimmunology & neuroinflammation
|October 15, 2025
概括
与富含氨酸的重复质瘤失活1 (LGI4) 抗体相关的自身免疫结节病 (AN) 呈现出各种临床过程和神经变化. 这项研究确定了AN患者的LGI4抗体,并探索了它们的致病机制.
科学领域:
- 神经免疫学 神经免疫学
- 周围神经病症研究研究
- 自免疫性疾病机制 自免疫性疾病机制
背景情况:
- 自身免疫结节病 (AN) 是一种罕见的神经疾病.
- 针对氨酸丰富的重复质瘤失活1 (LGI4) 的自身抗体与AN有关.
- LGI4定位在背脊根结质中的并和卫星结质上.
研究的目的:
- 定义AN的临床谱.
- 研究涉及LGI4自身抗体的AN的致病机制.
- 评估LGI4抗体在施万细胞增殖和髓化中的作用.
主要方法:
- 开发了一种基于活细胞的LGI4-免疫球蛋白 (Ig) G.G.的测定方法.
- 调查了131名患有慢性炎症性脱髓化多神经病变 (CIDP) 的患者.
- 在IgG化后测试的施万细胞增殖和基因表达 (Krox20,Prx).
- 在小鼠的坐骨神经内注射LGI4-IgG以进行形态评估.
主要成果:
- 确定了8名抗LGI4抗体阳性 (LGI4+) 患者,中位数发病年龄为72岁.
- 临床过程从急性/亚急性单相到慢性渐进性/复发性各不相同.
- 在慢性病例中,LGI4-IgG诱导了施万细胞增殖的增加和Krox20表达的减少.
- 内腔LGI4-IgG注射导致小鼠坐骨神经的节点/副节点变化.
结论:
- LGI4+ AN呈现出多种不同的临床表型,包括神经缩和洋球形成.
- 非髓化的施万细胞增殖有助于慢性LGI4+ AN的神经病理.
- LGI4抗体在自身免疫结节病变的发病过程中起作用.
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