Ontogenetic expression of chromogranin A and its derived peptides, WE-14 and pancreastatin, in the rat neuroendocrine system

The ontogenetic expression of chromogranin A (CgA) and its derived peptides, WE-14 and pancreastatin (PST), was studied in the rat neuroendocrine system employing immunohistochemical analysis of fetal and neonatal specimens from 12.5-day embryos (E12.5), to 42-day postnatal (P42) rats. CgA immunosta...

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Veröffentlicht in:Histochemistry and cell biology 1997-03, Vol.107 (3), p.251-257
Hauptverfasser: Barkatullah, S C, Curry, W J, Johnston, C F, Hutton, J C, Buchanan, K D
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container_end_page 257
container_issue 3
container_start_page 251
container_title Histochemistry and cell biology
container_volume 107
creator Barkatullah, S C
Curry, W J
Johnston, C F
Hutton, J C
Buchanan, K D
description The ontogenetic expression of chromogranin A (CgA) and its derived peptides, WE-14 and pancreastatin (PST), was studied in the rat neuroendocrine system employing immunohistochemical analysis of fetal and neonatal specimens from 12.5-day embryos (E12.5), to 42-day postnatal (P42) rats. CgA immunostaining was first detected in endocrine cells of the pancreas, stomach, intestine, adrenal gland and thyroid at E13.5, E14.5, E15.5, E15.5 and E18.5, respectively. PST-like immunoreactivity was detected in endocrine cells of the pancreas at E13.5, stomach, intestine at E15.5, adrenal gland at E17.5 and thyroid at E18.5. WE-14 immunoreactivity was first observed in the immature pancreas at E15.5, mucosal cells of the stomach at E15.5, scattered chromaffin cells in the immature adrenal gland and mucosal cells of the intestine at E17.5 and thyroid parafollicular cells at E18.5. These data confirm that the translation of the CgA gene is regulated differentially in various neuroendocrine tissues and, moreover, suggests that the post-translational processing of the molecule is developmentally controlled.
doi_str_mv 10.1007/s004180050110
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CgA immunostaining was first detected in endocrine cells of the pancreas, stomach, intestine, adrenal gland and thyroid at E13.5, E14.5, E15.5, E15.5 and E18.5, respectively. PST-like immunoreactivity was detected in endocrine cells of the pancreas at E13.5, stomach, intestine at E15.5, adrenal gland at E17.5 and thyroid at E18.5. WE-14 immunoreactivity was first observed in the immature pancreas at E15.5, mucosal cells of the stomach at E15.5, scattered chromaffin cells in the immature adrenal gland and mucosal cells of the intestine at E17.5 and thyroid parafollicular cells at E18.5. 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ispartof Histochemistry and cell biology, 1997-03, Vol.107 (3), p.251-257
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subjects Adrenal glands
Adrenal Medulla - embryology
Adrenal Medulla - metabolism
Animals
C cells
Central Nervous System - embryology
Central Nervous System - metabolism
CGA gene
Chromaffin cells
Chromogranin A
Chromogranins - metabolism
Digestive System - embryology
Digestive System - metabolism
Embryos
Female
Fetuses
Immune Sera
Immunoreactivity
Immunosorbent Techniques
Intestine
Mucosa
Neonates
Neoplasm Proteins - metabolism
Neuroendocrine system
Neurosecretory Systems - embryology
Neurosecretory Systems - metabolism
Ontogeny
Pancreas
Pancreas - embryology
Pancreas - metabolism
Pancreatic Hormones - metabolism
Peptides
Pregnancy
Rats
Rats, Wistar
Stomach
Thyroid
Thyroid gland
Thyroid Gland - embryology
Thyroid Gland - metabolism
title Ontogenetic expression of chromogranin A and its derived peptides, WE-14 and pancreastatin, in the rat neuroendocrine system
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