Acetylcholine and norepinephrine stimulate the release of corticotropin-releasing factor-41 from the rat hypothalamus in vitro.
The effects of the two putative neurotransmitters acetylcholine and norepinephrine on immunoreactive CRF-41 release from incubated rat hypothalami were studied. Acetylcholine at concentrations of 10(-11) to 10(-7) M stimulated CRF-41 release. This effect was blocked in a dose-dependent manner by the muscarinic antagonist atropine (10(-9) to (-7) M). The nicotinic antagonist hexamethonium was ineffective at a dose of 10(-7) M, but produced slight inhibition of this response at 10(-5) M. Norepi...Expand abstract
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