pubmed-article:3552117 | pubmed:abstractText | The projections of the retrofacial portion of nucleus paragigantocellularis lateralis (retrofacial PGCL) were mapped in the rat with the Phaseolus vulgaris leucoagglutinin anterograde tracing technique. This structure projects to a restricted number of bulbar or spinal nuclei involved in autonomic regulation, principally the intermediolateral cell column of the spinal cord, the nucleus tractus solitarius complex, the lateral parabrachial and Kolliker-Fuse nuclei and the ventrolateral medulla. Retrofacial PGCL also densely innervates the locus coeruleus. This projection originates in large part from phenylethanolamine-N-methyltransferase-immunoreactive cells (C1 adrenergic cluster) as demonstrated by immunohistochemistry combined with the retrograde transport of rhodamine-tagged microbeads. A very small suprabulbar projection of retrofacial PGCL was also detected in some cases. | lld:pubmed |