...
首页> 外文期刊>The European Journal of Neuroscience >BDNF increases rat brain mitochondrial respiratory coupling at complex I, but not complex II.
【24h】

BDNF increases rat brain mitochondrial respiratory coupling at complex I, but not complex II.

机译:BDNF在复合体I处增加大鼠脑线粒体呼吸耦合,但在复合体II处不增加。

获取原文
获取原文并翻译 | 示例
           

摘要

Abstract Brain-derived neurotrophic factor (BDNF) governs both the selective survival of neurons during development and the experience-based regulation of synaptic strength throughout life. BDNF produced a concentration-dependent increase in the respiratory control index (RCI, a measure of the efficiency of respiratory coupling, ATP synthesis and organelle integrity) of rat brain mitochondria. This effect was mediated via a MAP kinase pathway and highly specific for oxidation of glutamate plus malate (complex I) by brain mitochondria. The oxidation by brain mitochondria of the complex II substrate succinate was unaffected by BDNF. The failure of BDNF to modify respiratory activity associated with mitochondrial preparations isolated from rat liver indicates that the actions of the neurotrophin are tissue specific. BDNF also increased the RCI values associated with Ca(2+)-induced respiration to a similar extent. This is the first demonstration that BDNF, in addition to modifying neuronal plasticity, can modify brain metabolism and the efficiency of oxygen utilization. The finding that neurotrophins can alter mitochondrial oxidative efficiency has important implications for neurodegenerative and psychiatric diseases.
机译:摘要脑源性神经营养因子(BDNF)控制着神经元在发育过程中的选择性存活以及整个生命过程中基于经验的突触强度调节。 BDNF导致大鼠脑线粒体的呼吸控制指数(RCI,呼吸耦合效率,ATP合成和细胞器完整性的量度)的浓度依赖性增加。这种作用是通过MAP激酶途径介导的,并且对脑线粒体对谷氨酸加苹果酸(复合体I)的氧化具有高度特异性。复杂的II底物琥珀酸酯的脑线粒体氧化不受BDNF的影响。 BDNF无法改变与从大鼠肝脏分离的线粒体制剂相关的呼吸活动,这表明神经营养蛋白的作用是组织特异性的。 BDNF也增加了与Ca(2+)诱导的呼吸相关的RCI值,程度相似。这是第一个证明BDNF除了可以改变神经元可塑性之外,还可以改变大脑的新陈代谢和氧气的利用效率。神经营养蛋白可以改变线粒体氧化效率的发现对神经退行性疾病和精神疾病具有重要意义。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号