摘要
目的 本研究从离体细胞水平探讨重症肌无力 (MG)患者 CNS受损的可能机制。方法 从 MG患者和正常人血中提取 Ig G。体外培养新生 SD大鼠皮层神经元 ,用免疫组化法观察 ACh RAb与神经元 n ACh R免疫结合反应 ,并行神经元胞浆钙测定。结果 MG患者 Ig G可与离体培养的皮层神经元免疫结合并引起异常胞浆钙变化 ,而正常人血中提取的 Ig G则否。结论 MG患者外周 Ig G(ACh RAb)可与离体培养的神经元 n ACh R结合并引起神经元生理活性变化 ,是 MG患者 CNS受损的可能机制。
Objective To reveal the mechanism of CNS involvement with MG on cell level in vitro. Methods The primary cultured neurons were dissociated from cerebral cortex of newborn rats. Immunoreactions between AChRAb and neuronal AChR on neurons were investigated by using immuhistochemical method,the intracellular Ca[2+] ion was measured at the same time. Results The positive immunoreactions and abnormal reactions of calcium ion were found on those used IgG purified from MG patients sera,the negative reactions were found by using IgG from healthy control. Conclusion It is concluded that AChRAb of MG patients may bind to neuronal nAChR on cultured neurons and induce their physiological changes,that may cause CNS dysfuntion in MG.
出处
《中风与神经疾病杂志》
CAS
CSCD
北大核心
2005年第1期13-15,共3页
Journal of Apoplexy and Nervous Diseases
基金
国家自然科学基金资助项目 (3 9970 2 67)
关键词
患者
胞浆
皮层神经元
RA
人血
正常人
CNS
离体细胞
结合反应
离体培养
Myasthenia gravis
Neuron
Cell culture
Neuronal nicotinic acetylcholine receptor
Acetylcholine receptor antibody
Calcium ion
