Title
Immunohistochemical localization of WE-14 in the developing porcine sympathoadrenal cell lineage Immunohistochemical localization of WE-14 in the developing porcine sympathoadrenal cell lineage
Author
Faculty/Department
Faculty of Medicine and Health Sciences
Publication type
article
Publication
Heidelberg ,
Subject
Chemistry
Biology
Human medicine
Source (journal)
Histochemistry and cell biology. - Heidelberg
Volume/pages
116(2001) :3 , p. 255-262
ISSN
0948-6143
ISI
000171330600010
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Immunohistochemical investigation of the post-translational processing of chromogranin A (CgA) to generate WE-14 in the sympathoadrenal cell lineage of the developing porcine fetus (F) detected intense CgA and weak WE-14 immunoreactivity in migrating neuroblast cells of the diffuse sympathetic ganglia adjacent to the dorsal aorta and projecting toward the cortical mass at F24-27. F37-42; WE-14 immunoreactivity was detected in chromaffinoblasts at the periphery of the developing cortex and at F54-56 days gestation WE-14 immunoreactivity was detected in a large population of central medullary cells. From F74 to F76 days and thereafter the number of cells exhibiting intense WE-14 immunostaining decreased, and the majority of chromaffin cells exhibited uniform weak WE-14 immunostaining. At postnatal day 1 (P1) intense WE-14 immunoreactivity was primarily confined to clusters of chromaffin cells with weak immunostaining in the general population. The transitory neuroblasts, chromaffinoblasts, and maturing chromaffin cell population exhibited uniform intense C-A immunostaining through gestation and after birth. Additional observations detected intense C-A and WE-14 immunostaining in extrachromaffin tissue at P1 and in neuronal-like cells in vessels of the aortic arch at F37. This study has demonstrated that CgA is post-translationally processed to generate WE-14 during early fetal development in the migrating progenitor cells of the porcine sympathoadrenal lineage.
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