
Afferent connections of the caudal raphe pallidus nucleus in rats: a study using the fluorescent retrograde tracers fluorogold and true-blue
2000; Elsevier BV; Volume: 182; Issue: 1 Linguagem: Inglês
10.1016/s0940-9602(00)80118-1
ISSN1618-0402
AutoresMaria Inês Nogueira, Briseida Dogo de Rezende, Luiz Eduardo Ribeiro do Vale, Jackson C. Bittencourt,
Tópico(s)Neuroendocrine regulation and behavior
ResumoAfferent connections to the caudal region of the nucleus raphe pallidus (RPa) in rats were studied using fluorogold and true-blue as tracers. Due to its ability to produce limited injection sites, true-blue proved to be more appropriate than fluorogold for studying long distance connections in a narrow structure such as the RPa. Fluorescent, retrogradely-labeled perikarya were found in the preoptic area (median, medial and lateral nuclei), hypothalamus (anterior, dorsal, lateral and posterior areas, and the peri- and paraventricular nuclei), zona incerta, central gray (dorsal, ventral and ventro-lateral), reticular formation of the brainstem, trigeminal spinal nuclei and in the spinal cord (laminae V–X at thoracic, lumbar and sacral levels). This connection pattern suggests the involvement of the RPa in autonomic, somatic and endocrine functions.
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