神经生长因子对对交感冠状动脉内置的后血性功能障碍的保护作用
T Abe1, D A Morgan, D D Gutterman
1Cardiovascular Center, University of Iowa College of Medicine, Iowa City 52242, USA.
Circulation
|January 7, 1997
概括
神经生长因子 (NGF) 保护心交感神经免受心肌缺血引起的损伤. 外部施用和自然产生的NGF都能防止心脏病发作后的神经麻木.
科学领域:
- 心脏病学 心脏病学
- 神经科学是一个神经科学.
- 分子生物学分子生物学
背景情况:
- 心肌缺血迅速增加神经生长因子 (NGF) 在心脏的生产.
- NGF在各种组织中保持神经完整性方面发挥着作用.
- 这项研究调查了NGF在缺血事件期间对心脏交感神经的影响.
研究的目的:
- 确定外源性和内源性NGF对心肌缺血后心脏交感神经的保护作用.
- 评估NGF如何影响由缺血-再输液损伤引起的神经功能障碍.
主要方法:
- 在麻醉的狗身上进行了实验.
- 通过测量冠状动脉血管阻力变化在星状节刺激后评估心脏交感神经活动.
- 左前下垂冠状动脉封闭 (7或15分钟) 用于诱导缺血,随后给予NGF或抗NGF.
主要成果:
- 在15分钟的缺血期间,外源NGF输液减轻了对交感刺激的冠状动脉收缩反应的缺血后减少.
- 在7分钟的缺血期间注入NGF抗体导致显著的神经麻木 (神经功能受损).
- 用车辆治疗的组显示冠状动脉收缩减弱 (15分钟封闭) 或没有变化 (7分钟封闭),作为对照.
结论:
- 外源性施用NGF显示出对心脏交感神经的后性神经麻的保护作用.
- 内源性释放的NGF也有助于保护心脏交感内置免受缺血损伤.
- 在缺血发作期间和之后,NGF是保持心脏交感神经功能的一个关键因素.
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