Characterization of opioid receptor types modulating acetylcholine release in septal regions of the rat brain

Presynaptic opioid receptors of the delta- and mu-types have been shown to inhibit the release of acetylcholine (ACh) in the rat striatum and hippocampus, respectively, but it is unknown whether opioid receptors modulate the release of ACh also in the region of origin of the hippocampal cholinergic...

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