Elsevier

Neuroscience Letters

Volume 193, Issue 2, 30 June 1995, Pages 77-80
Neuroscience Letters

VIP-like immunoreactive projections from the dorsal raphe and caudal linear raphe nuclei to the bed nucleus of the stria terminalis demonstrated by a double immunohistochemical method in the rat

https://doi.org/10.1016/0304-3940(95)11669-NGet rights and content

Abstract

To localize the vasoactive intestinal polypeptide (VIP)-like immunoreactive neurons at the origin of the plexuses of VIP-immunoreactive fibers found in the bed nucleus of the stria terminalis (BNST), we combined iontophoretic injections of the retrograde tracer cholera toxin B-subunit (CTb) with VIP immunocytochemistry. Following CTb injections in the BNST, 2 groups of retrogradely labeled neurons immunoreactive to VIP were detected: (1) a dorso-caudal group localized in the dorsal part of the dorsal raphe nucleus and the adjacent ventro-lateral part of the periaqueductal gray; and (2) a rostral group in the caudal linear raphe nucleus. No double-labeled cells were observed in other nuclei including those of the amygdala and the supramammillary nucleus.

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This work was supported by INSERM, CNRS and DRET (grant 91130).

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