Atrial natriuretic polypeptide-like immunoreactivity in the rat pituitary: light and electron microscopic studies

Add time:08/23/2019    Source:sciencedirect.com

Immunoreactive atrial natriuretic polypeptide (ANP) was investigated in the pituitary of rats by light and electron microscopy using the indirect immunofluorescence and peroxidase-antiperoxidase techniques. ANP-like immunoreactivity was present in 30–35% of anterior pituitary cells. These cells have two types of secretory granules being characteristic of rat gonadotrophin-storing granules, and were usually adjacent to the capillary endothelium. The results of this study suggest the co-occurrence of ANP and gonadotrophins in the anterior pituitary cells.

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