Resumen de Connection between the arcuate nucleus and the posterior lobe of the hypophysis: An angiotensin II immunohistochemival study in rats

Emilia María Carmona Calero, Ibrahim González Marrero, Romualdo Ferres Torres, Herminia Calixta Pérez González, Carlos Raúl Monge Casafranca, Agustín Lorenzo Castañeyra Perdomo, José Carlos Ormazábal Ramos, I. Martínez-Peña Valenzuela, Manuela Castañeyra Martín

• The aim of this study was to perform an immunohistochemical study of the angiotensinergic pathway from the arcuate nucleus (AN) to the posterior lobe of the hypophysis (PLH) of 10- week-old matched normotensive Wistar Kyoto rats (WKY), using our own policlonal antibody raised in mice against Angiotensin II (mouseantiangiotensin II, MAAII). Cells and fibers in the rostroventral and dorsocaudal parts of the AN, the internal zone of the median eminence and PLH showed immunoreactive material for antiangiotensin II. Angiontensin II fibers originating in the anteroventral part of the AN, crossing median eminence (ME) and infundibular stem and arriving at the PLH were also observed.