Serotoninergic endings on VIP-neurons in the suprachiasmatic nucleus and on ACTH-neurons in the arcuate nucleus of the rat hypothalamus. A combination of high …

J Kiss, CS Leranth, B Halasz - Neuroscience letters, 1984 - Elsevier
J Kiss, CS Leranth, B Halasz
Neuroscience letters, 1984Elsevier
A combination of immunocytochemistry with transmitter specific autoradiography at the
electron microscopic level was used to identify vasoactive intestinal polypeptide (VIP)-or
ACTH-containing neurons and serotoninergic nerve terminals in the suprachiasmatic (SCN)
and arcuate nuclei (AN). We observed nerve terminals showing selective uptake of [3 H]
serotonin forming synaptic contact with perikarya or dendrites where the postsynaptic
structures exhibited VIP-like immunoreactivity in the SCN and ACTH-like immunoreactivity in …
Abstract
A combination of immunocytochemistry with transmitter specific autoradiography at the electron microscopic level was used to identify vasoactive intestinal polypeptide (VIP)- or ACTH-containing neurons and serotoninergic nerve terminals in the suprachiasmatic (SCN) and arcuate nuclei (AN). We observed nerve terminals showing selective uptake of [3H]serotonin forming synaptic contact with perikarya or dendrites where the postsynaptic structures exhibited VIP-like immunoreactivity in the SCN and ACTH-like immunoreactivity in the AN. The findings provide ultrastructural evidence that serotoninergic nerve fibers terminate on VIP-neurons in the SCN and on ACTH-neurons in the AN.
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