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Direct catecholaminergic projection from nucleus tractus solitarii to supraoptic nucleus

Authors
Journal
Brain Research
0006-8993
Publisher
Elsevier
Publication Date
Volume
454
Identifiers
DOI: 10.1016/0006-8993(88)90843-8
Keywords
  • Supraoptic Nucleus
  • Neurosecretory Cell
  • Vasopressin Cell
  • Nucleus Tractus Solitarii
  • Catecholaminergic Projection
  • A2 Catecholamine Cell Group
Disciplines
  • Chemistry

Abstract

Abstract To determine whether the supraoptic nucleus (SON) receives a direct projection from catecholamine cells of the nucleus tractus solitarii (NTS), retrograde transport of rhodamine-tagged latex microspheres was combined with a procedure for the fluorescence histochemical visualization of catecholamines. SON tracer injections, made via transpharyngeal approach, retrogradely labelled cells at all levels of NTS, although the majority were located caudal to obex with an ipsilateral predominance. Approximately half of these cells were also identified as catecholaminergic; the relatively caudal level in the dorsomedial medulla of most of these cells suggests that they probably correspond to the A2 catecholamine cell group.

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