Rostral ventrolateral medulla: selective projections to the thoracic autonomic cell column from the region containing C1 adrenaline neurons

CA Ross, DA Ruggiero, TH Joh… - Journal of …, 1984 - Wiley Online Library
CA Ross, DA Ruggiero, TH Joh, DH Park, DJ Reis
Journal of Comparative Neurology, 1984Wiley Online Library
Anterograde, retrograde, and combined axonal transport methods were used to describe the
descending efferent projections of a region of rostral ventrolateral medullary reticular
formation important Ln cardiovascular control. We have termed this region, which contains
C1 adrenaline-synthesizing neurons, the nucleus reticularis rostroventrolateral is (RVI,).
Efferent projections from the RVL innervate all segmental levels of the thoracic
intermediolateral and intermediomedial columns as shown using retrograde transport of …
Abstract
Anterograde, retrograde, and combined axonal transport methods were used to describe the descending efferent projections of a region of rostral ventrolateral medullary reticular formation important Ln cardiovascular control. We have termed this region, which contains C1 adrenaline-synthesizing neurons, the nucleus reticularis rostroventrolateral is (RVI,). Efferent projections from the RVL innervate all segmental levels of the thoracic intermediolateral and intermediomedial columns as shown using retrograde transport of lectin-conjugated horseradish peroxidase (HRP) or fast blue dye, and anterograde transport of either HRP or labeled amino acids. The projection is highly specific in that there are no projections to thoracic dorsal or ventral horns. This innervation corresponds to the distribution of preganglionic sympathetic neurons in the intermediolateral column. In particular, terminals surround neurons projecting to the adrenal medulla, as demonstrated by combined anterograde and retrograde transport methods at the light level.
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