Ontogenetic development of neuropeptide Y-like-immunoreactive cells in the gastroenteropancreatic endocrine system of the dogfish

Cell and Tissue Research
A ChibaS Oka

Abstract

This immunocytochemical study was carried out to elucidate the ontogenetic development of neuropeptide Y-like-immunoreactive cells in the gastroenteropancreatic endocrine system of the cloudy dogfish, Scyliorhinus torazame. Immunostained cells first appeared in the pancreas of the embryo at the 15-mm stage, and were also detected in the vitello-intestinal duct of the yolk stalk at the 20-mm stage. These cells were polymorphic, with occasional processes that were sometimes directed toward the vascular wall or into the cavity of the vitello-intestinal duct. At the 34-mm stage, immunostained cells could also be found in the proximal part of the spiral intestine and, by the 74-mm stage, immunopositive cells were present in the gastric mucosa. In the gut and pancreas, the cells gradually increased in number with development, whereas in the vitello-intestinal duct and internal yolk sac, they decreased and seemed to disappear following hatching. Thus, in juveniles, the distribution of the neuropeptide Y-like-immunoreactive cells in the gastroenteropancreatic endocrine system had attained that of adults. Electron-microscopic immunocytochemistry demonstrated that, in the labeled cells of the vitellointestinal duct, the neuropeptide Y-li...Continue Reading

References

Mar 16, 1977·Cell and Tissue Research·F SundlerL I Larsson
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Dec 30, 1986·Biochemical and Biophysical Research Communications·J R KimmelA B Rawitch
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Sep 1, 1982·Proceedings of the National Academy of Sciences of the United States of America·K Tatemoto
Sep 1, 1990·Fish Physiology and Biochemistry·S Van Noorden

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Citations

Dec 22, 1999·General and Comparative Endocrinology·J H Youson, A A Al-Mahrouki
Dec 22, 1999·General and Comparative Endocrinology·A A Al-Mahrouki, J H Youson
Aug 21, 2010·Autonomic Neuroscience : Basic & Clinical·Catharina Olsson, Susanne Holmgren
Jul 2, 2003·Journal of Morphology·Dagmara Podkowa, Lucyna Goniakowska-Witalińska

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