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脑老化与阿尔茨海默病中神经生长因子及其受体变化的研究进展 被引量:3

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摘要 神经生长因子不仅在神经元的胚胎期和发育期,而且在某些成熟的神经元中也有重要的营养支持作用。神经生长因子有高亲和力酪氨酸激酶和低亲和力p75二种受体。酪氨酸激酶A受体介导的存活信号途径与p75受体介导的凋亡途径相互制约、平衡。目前研究已观察到在脑退行性病变如脑老化、阿尔茨海默病中神经生长因子mRNA的表达和神经生长因子蛋白量无减少或少量增加,而酪氨酸激酶A mRNA减少,p75mRNA增加。因此通过提高酪氨酸激酶A mRNA表达等途径,发挥神经生长因子的营养作用,延缓中枢神经系统的退行性变化,有重要意义。
作者 周杰明
出处 《国外医学(老年医学分册)》 2000年第3期111-114,共4页 Foreign Medical Sciences(Geriatrics)
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