神经生长因子受体活性中草药及其成分的筛选

Screening for NGF Active Chinese Medicinal Herbs and Their Active Components

一些神经元退行性病变Alzheimer’s病，是导致早衰的重要原因之一，其发生和发展与缺乏神经生长因子的营养作用有关。而神经生长因子对神经元的营养支持作用主要是由受体介导的，本文采用神经生长因子受体竞争结合实验模型对14种传统抗衰老中草药的神经生长因子受体活性进行了筛选，并从牛膝中筛选出一种特异性抑制神经生长因子与其受体结合的活性物质，其IC50为6．18±3．43μg／ml。

It has been revealed that nerve growth factor (NGF ) deficiency is the main cause of some kinds of neuron degenerative diseases such as Alzheimer's disease, and NGF administration can protect neuronal function decay and promote nerve regeneration. Moreover,NGF actions are mediated by its receptors. In the present study, 125I-NGF receptor binding assay was used as a model for the screening of NGF receptor active components from 14 Chinese medicinal herbs. It was found that a component from the root of Achyranthes bidentata BI. possesses such inhibitory activity with IC50 = 6. 18± 3.43 μg/ml.