Brain energetics during the sleep-wake cycle.

Brain energetics during the sleep-wake cycle.
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DOI:
10.1016/j.conb.2017.09.010
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发表时间:
2017-12
影响因子:
5.7
通讯作者:
Nedergaard M
Nedergaard M
中科院分区:
医学2区
文献类型:
--
作者:
DiNuzzo M;Nedergaard M

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清醒时的大脑活动与高代谢率相关,据信这支持信息处理和记忆编码。尽管失去意识,睡眠仍然会消耗大量的能量。实验证据支持睡眠期间发生的大脑代谢变化会抑制有氧糖酵解,这是环境导向的清醒行为和突触可塑性的标志。最近的研究表明,神经胶质星形胶质细胞通过调节间质液的体积、成分和类淋巴引流来应对促进唤醒的神经调节剂的减少。这些事件伴随着神经元放电模式、星形胶质细胞-神经元相互作用、突触事务和潜在代谢特征的变化。内部产生的神经元活动和网络稳态被提出来解释与睡眠相关的高能量需求。
Brain activity during wakefulness is associated with high metabolic rates that are believed to support information processing and memory encoding. In spite of loss of consciousness, sleep still carries a substantial energy cost. Experimental evidence supports a cerebral metabolic shift taking place during sleep that suppresses aerobic glycolysis, a hallmark of environment-oriented waking behavior and synaptic plasticity. Recent studies reveal that glial astrocytes respond to the reduction of wake-promoting neuromodulators by regulating volume, composition and glymphatic drainage of interstitial fluid. These events are accompanied by changes in neuronal discharge patterns, astrocyte-neuron interactions, synaptic transactions and underlying metabolic features. Internally-generated neuronal activity and network homeostasis are proposed to account for the high sleep-related energy demand.
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发表时间: 2010-06-30
期刊: The Journal of neuroscience : the official journal of the Society for Neuroscience
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