Noradrenergic modulation of masseter muscle activity during natural rapid eye movement sleep requires glutamatergic signalling at the trigeminal motor nucleus

Noradrenergic modulation of masseter muscle activity during natural rapid eye movement sleep requires glutamatergic signalling at the trigeminal motor nucleus
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自然快速眼动睡眠期间咬肌活动的去甲肾上腺素能调节需要三叉神经运动核的谷氨酸信号传导

DOI:
10.1113/jphysiol.2014.272633
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发表时间:
2014
期刊:
The Journal of Physiology
影响因子:
--
通讯作者:
J. Peever
J. Peever
中科院分区:
--
文献类型:
--
作者:
P. Schwarz;Saba Mir;J. Peever

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去甲肾上腺素的主要作用是增强运动神经元对兴奋性递质输入的反应。目前尚不清楚α-1去甲肾上腺素受体激活是否足以在没有兴奋性(兴奋性)输入的情况下,在自然清醒和睡眠行为期间独立触发咬肌活动。在这里,我们使用的行为,神经药理学和电生理技术在快速眼动(REM)睡眠,以证明去甲肾上腺素对运动输出的兴奋作用在没有内源性的amatergic驱动器的情况下丢失。这些发现可能揭示了胺能药物在治疗某些睡眠运动障碍,特别是在REM睡眠期间的不显著的治疗结果。
A principal role of noradrenaline is to potentiate motoneuron output in response to excitatory transmitter input. It is unknown if α‐1 noradrenoceptor activation is sufficient to independently trigger masseter muscle activity during natural waking and sleeping behaviour in the absence of excitatory (glutamatergic) input. Here, we use behavioural, neuropharmacological and electrophysiological techniques during rapid eye movement (REM) sleep to demonstrate that the excitatory effects of noradrenaline on motor output are lost in the absence of an endogenous glutamatergic drive. These findings may shed light on the unremarkable therapeutic outcomes of aminergic drugs in treating certain sleep motor disorders, particularly during REM sleep.
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