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卡米基希托通过神经营养因子减少β-粉样蛋白_25-35诱导的轴突损伤

Takumi Nagamatsu¹, Kaori Kubota², Takuya Watanabe¹

¹Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan.

Journal of natural medicines

|November 27, 2023

概括

日本草药kamikihito (KKT) 可能通过保护神经元免受β-粉样蛋白损伤来治疗阿尔茨海默病 (AD). KKT增强了神经营养因子信号传递,促进了轴突生长,并可能逆转AD相关的神经退行.

科学领域:

神经科学是一个神经科学.
药理学药理学是指药理学的学科.
草药是一种草药.

背景情况:

阿尔茨海默病 (AD) 是一种神经退行性疾病,其特点是粉样β (Aβ) 斑块的积累.
日本草药卡米基希托 (KKT) 最近在阿尔茨海默病治疗中显示出前景.
在阿尔茨海默病中,KKT疗效的确切机制尚不清楚.

研究的目的:

在初级神经元培养物中研究KKT对Aβ诱导的神经毒性的神经保护机制.
阐明神经营养因子 (NFs) 在KKT对阿尔茨海默病的治疗效果中的作用.

主要方法:

主要培养的海马神经元暴露于β-粉样蛋白 (Aβ) _25-35以诱导神经毒性.
用免疫细胞化学和肖尔分析评估了KKT治疗对Aβ_25-35诱导的神经毒性的影响.
通过RT-PCR分析神经营养因子 (NFs) 的基因表达,使用Trk抑制剂K252a来探测信号通路.

主要成果:

在海马神经元中,Aβ_25-35暴露损害了神经元树木化和tau阳性轴突外生.
KKT治疗显著改善了Aβ_25-35诱导的轴突缩.
KKT上调了神经生长因子 (NGF),来自大脑的神经营养因子 (BDNF) 和神经营养因子-3 (NT-3) 的表达,这种效应被K252a部分阻断.

结论:

KKT在初级神经元中显示出对Aβ诱导的轴突缩的神经保护作用.
KKT的机制涉及神经营养因子信号通路的上调调节.
这些发现为KKT作为阿尔茨海默病的潜在治疗剂提供了机制基础.

关键词:

轴突缩轴突缩轴突缩轴突缩贝塔氨基化物贝塔氨基化物大脑衍生神经营养因子 (Bdnf)卡米基希托 (KKT) 在神经生长因子 (Ngf)

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