Abstract
Glutamatergic projections from the parabrachial nucleus to the central amygdala are implicated in pain transmission. In this issue of Neuron, Delaney et al. identify a new form of adrenergic modulation at these synapses, demonstrating that noradrenaline-induced suppression of glutamate release is mediated by a decrease in the number of sites of synaptic transmission without changes in probability of release.
MeSH terms
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Adrenergic alpha-Agonists / pharmacology
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Amygdala / cytology
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Amygdala / physiopathology*
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Animals
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Emotions / physiology
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Glutamic Acid / physiology
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Humans
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Nerve Fibers / physiology
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Neural Pathways / physiology
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Neurotransmitter Agents / physiology
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Norepinephrine / pharmacology
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Pain / physiopathology*
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Pain / psychology
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Synapses / physiology*
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Synaptic Transmission / drug effects
Substances
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Adrenergic alpha-Agonists
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Neurotransmitter Agents
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Glutamic Acid
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Norepinephrine