The emerging role of GABAB receptors as regulators of network dynamics: fast actions from a 'slow' receptor?

The emerging role of GABAB receptors as regulators of network dynamics: fast actions from a 'slow' receptor?
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DOI:
10.1016/j.conb.2013.10.002
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发表时间:
2014-06
影响因子:
5.7
通讯作者:
McBain CJ
McBain CJ
中科院分区:
医学2区
文献类型:
--
作者:
Craig MT;McBain CJ

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传统认为离子型受体介导快速神经传递,而“慢”G蛋白偶联的代谢型受体在神经元网络的控制中具有次要的调节作用。在这里,我们讨论了最近的证据表明,皮层1层的代谢型GABAB受体的激活可以有力地抑制主细胞的活动,它们的激活可以迅速停止正在进行的网络活动。来自皮质内部和外部的输入都会聚集在第一层,在那里它们针对各种中间神经元群体,包括神经胶质细胞。我们认为,神经胶质细胞是一个强大的抑制电路的主要效应,通过GABAB受体的作用,可以通过远程连接的差异招募,担任不同的角色,有意识的知觉和记忆巩固。
Convention holds that ionotropic receptors mediate fast neurotransmission and that ‘slow’ G-protein coupled metabotropic receptors have a secondary, modulatory role in the control of neuronal networks. Here, we discuss recent evidence showing that activation of metabotropic GABAB receptors in cortical layer 1 can powerfully inhibit principal cell activity and that their activation can rapidly halt ongoing network activity. Inputs from both within and outwith the cortex converge upon layer 1 where they target various populations of interneurons, including neurogliaform cells. We argue that neurogliaform cells are the main effector of a powerful inhibitory circuit that, acting through GABAB receptors, can be differentially recruited by long-range connections to serve in roles as diverse as conscious perception and memory consolidation.
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期刊: The Journal of neuroscience : the official journal of the Society for Neuroscience
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前额叶皮层中第1层电路的丘脑控制。
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