状神经变因子防止了轴切除术后运动神经元的退化
M Sendtner1, G W Kreutzberg, H Thoenen
1Department of Neurochemistry, Max-Planck-Institute for Psychiatry, Planegg-Martinsried, FRG.
Nature
|May 31, 1990
概括
早期的产后运动神经元由于低状神经营养因子 (CNTF) 而易受损伤. 将CNTF局部应用于受伤的轴突可以防止运动神经元细胞体变性,突出显示CNTF的保护作用.
科学领域:
- 神经科学是一个神经科学.
- 发育生物学 发展生物学
- 细胞生物学 细胞生物学
背景情况:
- 动物运动神经元的发育涉及自然细胞死亡,随后对轴突损伤的敏感性.
- 在老鼠的这种脆弱期与低的坐骨神经纤毛神经营养因子 (CNTF) 水平相关,在它们在成年时代上升之前.
- CNTF的表达模式表明它扮演了作为病变因子而不是目标衍生的神经营养分子的角色.
研究的目的:
- 调查是否不足的CNTF可用性导致运动神经元在出生后发育早期对轴切损伤的脆弱性.
- 确定CNTF在保护运动神经元免受受伤引起的退化中的神经营养作用.
主要方法:
- 新生小鼠运动神经元中的轴突切断.
- 局部应用CNTF到轴突损伤的位置.
主要成果:
- 当地应用CNTF成功地防止了轴突切割后运动神经元细胞体的退化.
- 这表明CNTF能够保护易受伤害的运动神经元免受轴切诱导的细胞死亡.
结论:
- 不足够的CNTF可用性是导致运动神经元在出生后早期发育过程中易受轴突损伤的关键因素.
- CNTF的使用可以有效地预防受伤后的运动神经元退化,强调其治疗潜力.
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