Abstract
An immunohistochemical study using antiserum raised against synthetic chicken natriuretic polypeptide was used to investigate the distribution of this peptide in the chicken heart. Immunoreactive cells, both in the atrial and ventricular walls, were identified by electron microscopy, and electron-dense granules in the atrial and ventricular cardiocytes were revealed to be storage sites of the peptide. The electron-dense material, thought to be the peptide, was found in the sarcoplasmic reticulum, and it is suggested that a secretory pathway of the peptide through the latter to extracellular space, may be present, in addition to an exocytotic one.
MeSH Terms
Aging/metabolism
Animals
Atrial Natriuretic Factor/metabolism
Chick Embryo
Chickens
Cytoplasmic Granules/metabolism,ultrastructure
Female
Heart/embryology
Myocardium/metabolism,ultrastructure
Chemicals
Atrial Natriuretic Factor
Authors & Affiliations
7 authors, click to expand affiliations / ORCID
Toshimori H
Third Division of Internal Medicine, Miyazaki Medical College, Japan.
Toshimori K
Minamino N
Kangawa K
Oura C
Matsukura S
Matsuo H
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